Trump arrived in China weak and needing a deal, and a new Pentagon report says China has gained a major edge on the US because of the Iran war — bad news for US power, good news for Beijing.

• Trump heaped praise on Xi and brought top CEOs like Elon Musk, Jensen Huang, and Tim Cook along, hoping for a trade win to boost the economy and stock market.
• Almost nothing concrete came out of the meeting so far — vague promises on farm goods, fentanyl, and oil, plus a Chinese warning over Taiwan that the US readout ignored.
• A confidential US intelligence report to the Joint Chiefs says China is exploiting the Iran war to gain ground militarily, economically, and diplomatically.
• The Iran war drained US weapons stockpiles, exposed weak air defenses, and let China watch how the US fights — useful for any future Taiwan fight.
• Iran kept most of its missiles, the US could not change the regime, and roughly $50 billion was burned with little to show, making this look like a historic defeat on par with Vietnam.

Outlook: Trump needs help from China to save face on Iran and the economy, but Beijing is negotiating from strength and will likely give little without concessions on Taiwan and tech sanctions.