President Trump and China's President Xi to meet in a high-stakes meeting

And AI is sure to be on the agenda of that high-stakes meeting between President Trump and China's President Xi later this week. The meeting is also putting fentanyl in China's efforts to block the flow of the drug into the U.S. back in the spotlight. Here's ABC's Britt Clennett. Tonight Treasury Secretary Scott Besant meeting with China's Vice Premier He Lifeng ahead of the high-stakes talks between President Trump and Xi. Iran trade and AI expected to top the agenda. We're leading China in AI. Besant making fresh accusations aimed at China's AI research. One of the ways we can push back against China, because the Chinese models, they distill from the U.S. models, which is a polite scientific word for steel. China calls the claims unfounded. The Trump Xi meeting also putting a fresh spotlight on Washington's demand that Beijing do more to stop the supply chain of chemicals used to make the fatal synthetic opioid fentanyl. China providing ABC News with this never-before-seen video showing a massive raid at a facility in Wuhan. Chinese authorities acting on U.S. intelligence. And in an exclusive interview with China's Deputy Head of Drug Control, Shan Yehua acknowledges more cooperation and trust is needed from both sides to combat the crisis. We have done a lot and we need to do more. You're admitting that more should be done. Yeah. More should be done. I mean, both China and the U.S. And on Iran, China vowing to protect its energy interests there. China buying 80% of Iran's oil. Lindsay? Brett, thank you.