President Trump and Russian President Vladimir Putin met in Alaska on Friday for a high-stakes summit on ending the war in Ukraine, but the talks failed to produce the ceasefire that Mr. Trump had sou...

Russian leader Vladimir Putin agreed at his summit with President Donald Trump to allow the U.S. and European allies to offer Ukraine a security guarantee resembling NATO’s collective defense mandate...

Witkoff told CNN that Putin had signed off on allowing “robust” security guarantees as part of an eventual peace accord, including a provision that would provide for a collective defense of Ukraine b...