Trump agrees to sell billions in US arms to NATO countries including Germany, Finland and Denmark and others for quick distribution to Ukraine, following his ultimatum to Putin on peace talks.

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

President Trump is hosting NATO Secretary General Mark Rutte at the White House on Monday as the U.S. agrees to sell new and more weapons to Europe and Ukraine.

President Donald Trump is anticipated to meet with NATO chief Mark Rutte, make a "major" announcement on Russia, and join an AI and energy summit during his 26th week in office.

Ivo Daalder, a senior fellow at Harvard Belfer Center, says that President Donald Trump realizes that he needs to change course because the Russian leader has been playing him "for years."

President Donald Trump has expressed his support for the collective defense offered by NATO in a reversal of his previous criticism of the alliance. Trump was asked by the BBC whether he still thought the alliance was "obsolete" as he had previously said,

U.S. Ambassador to NATO Matthew Whitaker discusses reactions to President Donald Trump announcing a weapons package sale to NATO for Ukraine and threatening secondary tariffs if a ceasefire deal is not reached.