Why this mattersSo why does this matter? Patriot interceptors are one of the only weapons that can reliably shoot down a Russian ballistic missile.
And Ukraine says it has about a tenth of what it needs.
Zelensky has said Ukraine needs 5% of America's Patriot stockpile just to survive winter. And 10% to stop every Russian ballistic missile coming at it.
That shortage got worse in February. That's when America and Israel went to war with Iran, and Patriot supplies got pulled away from Ukraine.
So a licence to build these missiles at home would matter. A lot.
But it would not fix anything fast.
Serhii Beskrestnov, an adviser to Ukraine's defence minister, says setting up the production line would take many months. Some of the parts take one to two years to make on their own.
So even with the licence signed today, Ukraine is still over a year away from making its own Patriots.
And here's the thing. This isn't the first time Trump has promised this and pulled back.
Back in July, at the NATO summit in Ankara, Trump told Zelensky he would give Ukraine a licence to make Patriots. Weeks later, he reversed himself at a Camp David cabinet meeting. He said the US had not agreed to hand over the technology, and that whoever got it could one day turn it on America.
Now Zelensky says Trump gave him a second final decision in New York. And two days later, asked to confirm it, Trump would not say yes.
Instead, he talked about the war ending. He said he wants Ukraine and Russia to make a deal and settle it themselves.
That's Trump talking about ending the war. Not arming Ukraine to keep fighting it.
He said all this just before leaving the White House for a college football game in Tennessee.
And the timing is brutal. A Russian drone strike hit a residential building in Kyiv the same day Zelensky made his announcement. A 14-year-old boy was killed.
CNN and UPI reported a wider toll across that day. Seven civilians killed. 59 injured. Strikes across eight regions of Ukraine.
Zelensky called it an absolutely savage and sickening strike, with no military logic at all.
He also used his UN speech this week to call Vladimir Putin, Russia's President, patient zero. The more freedom Putin has, he said, the more dangerous the world gets for everyone else.
So what don't we know? Whether Trump is refusing the licence outright, or just won't confirm it in public.
CNN says it has asked the White House to clarify.
Until it does, here's where things stand. Ukraine has its president's word that the deal is done. And an American president who won't say so himself.