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

In a statement, NATO said NATO Secretary General Mark Rutte will be in Washington on Monday and Tuesday and meet with President Trump and key administration officials.

When asked whether the United States would send long-range missiles to Ukraine, Trump replied, "No, we're not looking to do that."

On Monday, Trump said that Russia's failure to reach a negotiated settlement with Ukraine within 50 days would lead to his administration imposing a 100% tariff rate on Russian imports as well as what he called "secondary tariffs" on countries that have continued to do business with Moscow.

Russia assaulted Ukraine with a fresh wave of deadly drone and missile strikes Wednesday in another audacious rebellion of President Trump’s 50-day peace ultimatum to Vladimir Putin. Northeastern

President Trump threatens Putin with 100% tariffs if no Ukraine peace deal is reached within 50 days, while confirming arms sales to NATO to support Ukrainian resistance.

Donald Trump’s remarks on Ukraine on Monday were far from the biggest announcement the US president could have made.