The proposal of so-called Article 5-like guarantees comes amid marathon talks among special envoy Steve Witkoff, President Donald Trump’s son-in-law and adviser Jared Kushner and Ukrainian and European officials in Berlin as Washington tries to pressure Kyiv into accepting terms that will end the war.

The founder of Russia's opposition Yabloko party, which wants a ceasefire in Ukraine, has said his party will keep campaigning despite the arrest of two senior figures, a move he said was meant to derail it before next year's parliamentary election.

A 1,000-strong "dark fleet" of rogue tankers evading sanctions has become a new target for the U.S. and Ukraine, according to a senior maritime intelligence analyst.

Russia’s war in Ukraine continues, despite US President Donald Trump’s promise to end the conflict within 24 hours of his return to office in January. Should Trump succeed in brokering a peace deal, the agreement will have to address the future of Ukraine’s occupied lands.

Ukraine would receive security guarantees similar to those provided in Article 5 of the NATO treaty under a proposed peace deal discussed in Berlin, a U.S. official told reporters on Monday.

At the core of the discussions in Berlin is the 20-point peace plan proposal presented to the US by Ukraine last week to counter an initial American plan which was seen as heavily favouring Russia.

The Kremlin has described Ukraine’s push to join NATO as one of the “root causes” of the conflict. U.S. President Donald Trump has ruled out Ukrainian membership in the Western defensive alliance. Zelensky is searching for compromises that could secure a peace deal to end Russia’s ongoing invasion.