Major dispute to threaten Trump's Iran deal over billions in frozen Tehran funds: expert

U.S. and Iranian negotiators in Switzerland face a dispute over billions in frozen Iranian assets, threatening the stability of a recent interim agreement. The conflict centers on conditional access to funds under the June 17 memorandum of understanding, with Iranian officials demanding the return of $6 billion in Qatar and U.S. leaders, including Donald Trump, emphasizing strict compliance-based release terms.