Ukraine has launched a counterattack in the southern Russian border region of Kursk, warning that Russia is “getting what it deserves.”

It comes as Ukraine's president says only the US can provide security guarantees leading to an end to the war.

Ukraine said Tuesday its forces struck a Russian military "command post" in Russia's Kursk region during "combat operations," while backtracking on a claim it had launched a fresh offensive in the border area.

The historic first marks a milestone in Washington’s bid to replace Russia as Europe’s top source of natural gas.

Vladimir Putin might have lost a slice of revenue after Kyiv closed its gas pipeline to Russian supplies, but Moscow already has alternatives for shipping the fuel that stand to shield it from any serious economic hit.

Pro-Russia separatist enclave, which fought against Moldova in 1992, declare a state of emergency over the end of shipments