China hit 56 American companies with export controls and government procurement bans in retaliation for Pentagon sanctions on Chinese tech giants and automakers. Meanwhile, planned U.S.-Iran nuclear talks in Switzerland were postponed after Iran demanded a Lebanon ceasefire as a condition. Congress pushed back with a war powers resolution as government watchdogs launched a review of the conflict, while DeepSeek released a massive new AI model optimized for Chinese chips at a fraction of Western…