WSJ Opinion: Potomac Watch

The war in Ukraine has demonstrated how modern warfare is changing by using data and drones. Jillian Melchior tells Paul Gigot about what she saw at a command center in Ukraine and how the U.S. military can learn from what's happening in Europe.

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Donald Trump's meetings with Chinese leader Xi Jinping result in an extended trade truce, as Beijing presses the U.S. on its stance regarding Taiwan. Meantime, a federal judge halts Trump from banning CNN, MS NOW and Politico from the White House.

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President Trump and Iranian President Masoud Pezeshkian delivered defiant speeches targeting each other at this week's U.N. General Assembly, giving no indication that a peace agreement is near or that Iran intends to reach a deal before the midterm elections.

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President Trump will host China’s Xi Jinping for meetings and a state dinner at the White House. But behind all the pomp, will he press Beijing to stop supporting Iran? And will Trump hold back weapons from Taiwan?

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He gets applause for saying Iran can't be allowed nuclear weapons, while dismissing the idea of any global regulator for artificial intelligence. While in New York, he also holds diplomatic meetings, plus a friendly chat with Mayor Zohran Mamdani.

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