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 president Vladimir Putin is reportedly willing to freeze current front lines in exchange for Ukrainian territorial concessions and a NATO membership ban.

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.

Russia launched a massive overnight assault on Ukraine, firing 614 projectiles in what marks the most extensive aerial strike in three weeks. The Ukrainian Air Force reported intercepting or electronically jamming 546 drones and decoys, along with 31 missiles. Despite these efforts, strikes landed in 11 locations, including in Western Ukraine.

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.

Russia said Wednesday attempts to resolve security issues relating to Ukraine without Moscow's participation were a "road to nowhere," and that much diplomatic work needs to be done before Vladimir Putin and Volodymyr Zelenskyy are ever in the same room.