President Donald Trump says the United States is selling weapons to its NATO allies in Europe so they can provide them to Ukraine as it struggles to fend off a recent escalation in Russia’s drone and missile attacks.

United States military and NATO officials are discussing a possible plan that could be unveiled in the coming days that would provide Ukraine with much-needed aerial defense weapons, including Patriot systems, by funneling U.S. weapons through the European alliance, officials said.

If the plan is finalized, it would allow critical aid to flow to Ukraine as it endures one of Russia’s heaviest assaults of the war.