First Thing: Trump does deal with Nato allies to arm Ukraine and warns Russia of severe sanctions

The deal involves Nato countries buying US weapons destined for Ukraine, in a big shift in the president's approach to the war. Plus, a first glimpse of HBO's Harry Potter TV series

Good morning.

Donald Trump said he had sealed an agreement with Nato allies that will lead to large-scale arms deliveries to Ukraine, including Patriot missiles, and warned Russia that it will face severe sanctions if it does not make peace within 50 days.

What does it mean for the war? The US will sell weapons to Ukraine, the president said, with other Nato countries paying the bill. Otherwise, specifics were scant. No sums of money were mentioned, making it hard to calibrate how much of a difference the proposed weapon supply will make to Kyiv.

What about sanctions? Nothing new right now. Trump did promise to levy a 100% tariff on Russia if Putin did not agree a deal to halt the fighting within 50 days.

So what's the significance? Make no mistake: tonally, Trump's statements are a significant U-turn on his approach to the war. We're very unhappy - I am - with Russia," he said.