Sources of International Law

Global Affairs Academy
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Mar 12, 2026
This video discusses the sources of international law relying on Article 38(1) of the ICJ Statute.
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Hello and welcome to another exciting episode of The Law
Lab Here we dissect and unpack everything legal
My name is Eron Asidu Enchi your favorite host I suppose
And today I’m joined once again by Mr Ben
Mahmud Atamu to help us I think in the previous
episode were examining public international law specifically the introductory section
He actually helped us understand what public international law is and also
enabled us to distinguish it from
municipal law and private international law
I think we reviewed a few cases including Banfo and Henry Nanabuachi
We noted that Henry Nanabuachi is the current MPP's national organizer
opposition to the Attorney General and Minister of Interior
Foreign Affairs
Foreign Affairs got it
That's correct
Alright so today we all know that when you select your 1992 Constitution
if you choose the larger version you go to page 10 or Chapter 4
As you can see in Article 11 it outlines the sources
of law in Ghana—namely the domestic laws of Ghana
Now today what we want to examine is whether there are sources of public international
law and if so whether we have a defined source of public international law
That's exactly what Mr Ben Mahmud is here to help us with
So today we're examining the sources of international law
Yes
Do we actually have a settled source of public international law
Or are we merely assuming that there is a particular source of public international law Exactly
Thank you very much everyone
And I must say I'm delighted to be back with you all today
To continue the series we began in public international law
Very well Now to the question you have asked
Yes there is a discernible source of international law
or the sources of international law
to which the International Court
of Justice would ordinarily turn when resolving a dispute before it
Now the International Court of Justice was established by the United Nations in one of its resolutions to serve as
the judicial body responsible for resolving disputes between
nations or conflicts within the international community
So disputes between
Ghana and Togo Yes
But this one we can just settle in Togo
We can sit around the table have a few small glasses of gin and put it all behind us
Yes we can But there are
certain disputes that would have to go
beyond arbitration and require a court to make specific rulings
I believe a clear example is Ghana and I refer to the sharing of the Mediterranean border
Exactly
And many other disputes that courts can resolve
Additionally the UN established the ICJ
When I say the ICJ I mean the International Court of Justice
established the ICJ to also advise the
United Nations on legal matters as they may
occasionally refer to it for review And so regarding sources of international law
Our reference would be the statutes of the International Court of Justice
So the UN established the ICJ
The ICJ also has
statutes Exactly
Okay
I believe our system also has the rules set by the court committee that issues all regulations and orders
I recall in 2012 when we had this election petition
It traveled for approximately eight months into 2013 I
believe it wasn't until around August that a decision was made
In 2020 Justice Inin Chief Justice at the
time clearly stated this together with the rules of the court committee
We're not spending more than two months resolving disputes over the
presidential election so I believe the
same applies to the ICJ—very similar
Thus the statutes of the International Court of Justice are what establish the court's own framework and authority
Therefore the ICJ grants the courts the powers they possess to resolve disputes
and advise the UN as we previously mentioned
And in establishing the courts the
United Nations provided them with a
set of guidelines to consider when ruling on cases brought before them
It is the statutes that will be used to identify the
sources of international law which will be crucial for us
So essentially what you're saying is that the UN established the ICJ the International Court
of Justice which defined the statutes stating
that whenever there is an international dispute
Refer to that statute when ruling on the
matter Exactly
So the statutes granted the ICJ the powers it holds and everything else
For lack of a better phrase the terms of reference outlining the responsibilities they hold as a court
A scope
of work Exactly
Sure
Now Article 38 of the Statutes of the International Court of Justice
outlines the sources of law that it has recognized or those sources of law
which they have agreed will influence the decisions they make going forward
And thus Article 38 of the Statutes of the International Court of Justice
shall read as follows
The court whose function is to decide disputes
submitted to it in accordance with international law
shall apply and it gives the following: A international conventions whether general or particular
establishing rules expressly recognized by the disputing states
This is generally what we refer to as treaties
And later when we delve into subsequent episodes
I'm confident we'll have the chance to discuss these sources of law in great detail
The second paragraph or paragraph B would then go on to state that
ernational custom as evidence of a general practice accepted as law
Thus the court is reaffirming that international customary law
serves as another crucial source of law for the ICJ
The third paragraph will state that the general
principles of law recognized by civilized
nations may not necessarily be codified
laws but rather principles or maxims of law
which are generally recognized worldwide as binding or persuasive
authority for judges in resolving disputes brought before them
And last but not least it is subject to the provisions of Article 59
judicial decisions and the teachings of the most eminent publicists
Among the various nations the use of precedent
serves as a subsidiary means for determining legal
rules In simple terms this means that previous court decisions themselves would be binding on
You know future cases that the courts will need to resolve
Once again the courts will be guided by the works of
scholars such as Malcolm Shaw Damroth and a few others
Those who might influence their decisions
The court should consider one of my former law school classmates
His name is Divine Saluk
We call him the IGP Inspector General
of Petitions That gentleman has countless
petitions Even as we speak it's as though he carries petitions in his pocket
All he needs to do is edit it and add a few names
I think we'll be returning to the last paragraph
so that when you explain it
You consider whether it is binding or not and so do others
Just for educational purposes you've been referring to paragraphs and other elements
Remember that in our first edition
That was actually discussing how to interpret the Constitution—reading it from
articles down to clauses and paragraphs
The same approach applies to this situation
So Article 38 Clause 1 Paragraph A Paragraph B Paragraph C and then
you proceed Remember what I told you—that when you'reading an act—
It begins with sections and subsections and you proceed in the same order
But with the ICJ statute just as we see in the Constitution
We begin with the article then move to the clause then to
the paragraph The same principle applies to this situation
as well Now Mahmoud we've learned in various law schools
in different courses on constitutional law and legal systems
at when you examine the sources of law they are arranged in a hierarchy
in the sense that Article 11 of the 1992 Constitution establishes tha
You essentially have five sources of law: the Constitution Acts of
Parliament subsidiary legislation
existing laws and the common law of Ghana
I keep emphasizing Ghana so that we understand we are not dealing with the basic common law because
when we refer to Ghana's common law we
are actually referring to three distinct elements
First the familiar common law you're aware of You also examine the principles and rules of equity as
well as customary law Together these
three elements constitute the common law of Ghana
We are stating that whenever the Constitution is
referenced or a constitutional provision applies
it supersedes any other law as clearly established in Article 1 Clause 2 of the Constitution
Thus the Constitution shall be the supreme law of the land and any other law
found to be inconsistent with it shall
to the extent of the inconsistency be void
Are we seeing similar effects of the Constitution
in the ICJ Statute where whenever there
are for instance these sources of international law—treaties customary international law—
general principles of law recognized by civilized
nations as well as judicial decisions and works by highly
qualified publicists is this system structured hierarchically or is
it hierarchical in nature thank you very much
There is no simple answer to the question you've asked If you examine the
statutes of the ICJ as we have they do
not explicitly state the sources of law
ave been arranged in no particular order However
I believe that when you examine the specifics of
what all these elements represent we would come to
realize that treaties and international agreements
are voluntarily entered into
And that is the freedom of contract
It allows the parties the freedom to decide what
they wish to be bound by and what they do not
It stands to reason that treaties and international agreements would hold
some form of supremacy especially when
they address or pertain to disputes
It would follow then that if you
have voluntarily committed yourself
to these provisions of the treaty you should be bound by them
And so I would think that treaties would have to be the top priority
or the highest source of international
law In contract law there is this case
It is Corte v Noga The court examines implied
custom within an agreement by considering
how people actually behave Then the court
would infer well under this agreement
depending on the custom or trade you're involved in we will incorporate that
law or custom into your agreement what
you're attempting to convey to us is tha
when there is a custom even if it is
recognized in a disputed matter and there is a treaty
addressing that disputed matter the court will consider the treaty
Ahead of the customary international law right
Yes absolutely that's precisely the case I'm making
It only applies in situations where there is no existing treaty
which the disputing states are parties to which refers to the issue they
are both contesting in court then the
courts would have to set that aside
and other sources of international law
We noted that one of these sources is international customary law
The caveat regarding international customary law is that
paragraph B of Article 38 Clause 1 would go on to state that
this serves as evidence of a general practice accepted as law
It is not just any international custom that courts will consider it
must have attained or
received recognition as law between the parties
so that the parties the states that
carry them out are no longer
acting out of custom but out of legal obligation and we'll delve into those specifics
Certainly I’d prefer that we carefully select each one individually treating treaties with the utmost respect
But just as you're examining customary international law
I just remembered something I was taught in constitutional law when were studying the
evolution of constitutions—I believe our lecturer
when examining the case of Angu versus Ata
It was actually mentioned that certain customary activities
must become notorious before being referenced in court
Other jurists actually opposed such
developments originating in the courts but
the courts must take judicial notice of them thereby granting them notoriety
Clearly the first source of international law we must examine and understand is due to the principle of freedom to
contract for you know that this principle because of its
foundational role shapes the very basis of international agreements
That is why we say consideration need not be adequate what you accept as consideration
should not be subject to judicial evaluation
And so if you freely enter into an agreement
en clearly that treaty or agreement should take precedence since that is what you've
accepted So that concludes the discussion
on treaties and customary international law
I believe that when examining customary international law
we must consider the scope or degree to which a particular
practice has achieved such widespread recognition and acceptance that it is deemed legally binding by the court
And it has been acknowledged When
I was studying customary international law one
example that stood out to me was the
red carpet we lay out for heads of state
When they arrive at the court I just asked
myself if there's no red carpet being laid would that
constitute a breach of international law
I believe that would perfectly align with customary international law
The third form or source of international law
as stated in Article 38.1(c) of the Statute of
the International Court of
Justice namely the general principles of law recognized by civilized nations but which country is not civilized
Good question So what Article 38 1c is actually referring to is this:
before there were codified
constitutions and laws and all that
ere were those things that governed human behavior or daily life without necessarily
carrying the force of law as law evolved
and written statutes and constitutions emerged
These principles form the foundation of the laws that have been enacted Principles such as natural justice
ensuring everyone has the right to be heard—or at least
given the opportunity to be heard—in their own case
and all of those things
Principles such as pacta sunt servanda
that anyone who enters into a contract must fulfill their obligations
which they have genuinely accepted
I think that would even affect the boys
—those who enter into agreements with
ladies to propose to them Is that really
a contract That’s a matter for discussion
I think it's affecting you
You'll be dealing with a lot of suits
I'm sure that's an
interesting topic to discuss I have a friend there—he's
called Darlington Quarantine Engine I
think when it comes to such situations
We would need his expertise A highly
qualified publicist to defend him
That guy's trouble incarnate We need an
inspector general for
petitions Divine salute Tell him that guy can file
a petition I think
he deserves a statue at the GEMPA Law Faculty
For the number of petitions and advocacy efforts he has led
Divine Salute
He is contributing to the development of law
He says we are overcoming the law
Together we overcome the law
General principles of law
These widely recognized principles
which as I mentioned earlier
form the foundation of legal systems across nation states
are also principles that courts will take into account
when they are making decisions
or determinations on matters that have been brought
before them I think the last one we'll be
looking at and probably in our next episode
We'll go through each source of law one by
one so you can explain them in detail Moving
on to judicial decisions
when you look at our
system when you examine the state government
You have a matter before the court It
has been resolved Due to the principle
of stare decisis precedent if the
same issue or similar facts arise again
There is a dispute between AMA
and KUFI it is going to be applicable
Are these judicial rulings or is that even what we're discussing
Is it the same case that the
principle of stare decisis is being applied in judicial
decisions Right Okay
Again there isn't a straightforward
answer I believe what we must understand in
judicial decisions is that some are binding
while others carry persuasive weight
It is not binding but
it would influence the courts in reaching
their decision Now when there is a case between two parties
which in a prior matter had been decided by the court such a
decision would be binding In the
example you provided for instance
If a case between state AMA and state KUFI had been settled
three four or five years ago
there is now a new issue at hand
The facts are very similar to those In that new case between state
KUFI and state AMA with the same
parties involved it would be binding
However if it is state KOJO and state SEYAO subsequently the prior
ruling between state KUFI and state
AMA will not necessarily be binding
but would only have persuasive effect
meaning that the court is not bound
to follow the decision made there but
it has the capability to influence
what decision they make in that matter
In this international law
common law countries will be disadvantaged
because they rely on precedent
and thus will frequently cite extensive precedent
Civil law jurisdictions will have a certain
advantage because they are considering but as
we noted if the case carries persuasive weight
it can significantly strengthen your arguments
It can only strengthen the arguments
But when it comes to precedent
you're compelling the court to accept it
unless they strictly adhere to the three rules
I think when we examine our judicial precedent case
and when we explain it you'
ll understand that in common
law countries you'required to follow precedent However
there are three circumstances where this does not apply
In any of the three you can
actually depart from precedent as it is the judge's
role to distinguish between the facts
and the case was decided based on inquiry
Where an inquiry is made we are stating that
the judge either failed to consider a particular
material fact or failed to apply a specific law
which would have altered the outcome of the case
And the third circumstance
is when there is a changed
circumstance We are living in a
Gen Z era a digitized digital era
In 1992 there was no TikTok Today
we have TikTok So there are changed
circumstances that judges may consider
when deciding not to follow precedent
Mahmoud I think it's been an exciting
one running us through Article 38.1
specifically on the sources of international
law I believe that in our next episode
Please take your time to walk us through
these sources of law one by one so we can
fully appreciate them Thank you very much
ladies and gentlemen
This has been The Law Lab
We've examined the sources of
law Remember I've always been
saying don't bring every issue to
God—take some to your lawyer
Thank you so much and see you in our next episode
