Trump's moves underline his growing disenchantment with Russian President Vladimir Putin over the lack of progress in U.S.-led efforts to secure a ceasefire.

The president announced the US will send additional Patriot air-defense systems to Ukraine, part of a European Union–funded deal.

The weapons for Ukraine would henceforth be bought by European allies rather than donated from American stocks or bought from manufacturers with American money, as in the past. Billions of dollars’-worth of funds authorised by Congress under his predecessor,