Special U.S. envoy Steve Witkoff says Russian leader Vladimir Putin agreed to allow the U.S. and Europe to offer Ukraine a security guarantee resembling NATO's collective defense mandate.

On Tuesday, U.K. Prime Minister Keir Starmer hailed the possibility of NATO-backed security guarantees as a “breakthrough,” noting that the U.S. was now working “at pace” with 30 or so other countries, which he called a “coalition of the willing,” to help Ukraine.

Russian leader Vladimir Putin agreed at his summit with President Donald Trump that the United States and its European allies could offer Ukraine a security guarantee resembling NATO’s collective defense mandate as part of an eventual deal to end the war,

The NATO Chiefs of Defense reaffirmed support for Ukraine in a virtual meeting Wednesday in Brussels that included all 32 allied military leaders and featured the first briefing in this format led

Secretary of State Marco Rubio told European counterparts Thursday the US will participate in post-war security guarantees for Ukraine but that the Trump administration believes Europe should take the lead,

General Christopher Donahue, commander of U.S. Army Europe and Africa, said allies could seize Kaliningrad "in a timeframe that is unheard of."

NATO aircraft scrambled from Romania following a large-scale Russian attack on across Ukraine overnight, including in the Odesa region near Danube River border with allied nation.

Zelensky returns to the Oval Office for the first time since his blowup with Trump. This time he is bringing back up.

President Trump hosted Ukrainian President Volodymyr Zelenskyy and European leaders at the White House on Monday, an event the U.S. president called "a very good, early step" to possibly resolve the war in Ukraine.

Kurt Volker is an American former ambassador to NATO and former special representative for Ukraine. Nico Lange is a former chief of staff to the German defence minister.

Europe did not come to Washington to negotiate with America as a partner; it came to plead with Trump not to make a unilateral deal on Ukraine with Putin, writes Ashok Swain. View on euronews

U.S. President Donald Trump told President Volodymyr Zelenskiy on Monday that the United States would help guarantee Ukraine's security in any deal to end Russia's war there, though the extent of any assistance was not immediately clear.