Ukrainian President Volodymyr Zelenskiy also held talks with a U.S. envoy on Monday on increasing weapons production and arms purchases.

Trump on Monday said the United States would ship "billions of dollars' worth" of military equipment to NATO members, paid for by the alliance, to be handed over to Ukrainian forces battling grinding Russian advances. Trump had earlier this month suggested NATO would "100 percent" pay for U.S. weapons, which would be sent to Ukraine.

What is known about US President Donald Trump's idea to supply Ukraine with American weapons using NATO funds, and why not all allies support this initiative, is analyzed in an article by RBC-Ukraine.

Trump is looking at making money out of Nato – not saving Ukraine - ANALYSIS: Don’t be misled; Trump is peeved by Putin and will make money from his irritation out of Ukraine’s war but he has not shifted away from Russia completely,

President Donald Trump is set to meet with NATO Secretary-General Mark Rutte on Monday as the United States warms up to the idea of providing Ukraine with missiles in its war with Russia. Trump teased a “major announcement” on Monday regarding Russia,