Defense experts questioned Russia's drone attack claims against President Vladimir Putin's residence after Moscow provides conflicting accounts of intercepted Ukrainian drones.

In a plot worthy of a thriller, Ukraine's alleged staged assassination of a Russian fighter has left the world buzzing with intrigue and unanswered questions.

Russia said at least 24 people, including a child, have been killed in a drone strike on a hotel and cafe where civilians were seeing in the new year in a Russian-controlled part of the Kherson region in southern Ukraine.

Zelensky said Russia targeted Ukraine overnight, while a Russian official said drones targeted a New Year party in a Russian-occupied region.

The United States is offering Ukraine security guarantees for 15 years as part of a proposed peace plan. That's according to Ukrainian President Volodymyr Zelenskyy.

Moscow reported a deadly strike on a hotel in territory it occupies in southern Ukraine while Kyiv said Russia attacked its power supplies.

Ukrainian President Volodymyr Zelensky talks battle lines, a corruption scandal distracting the war effort, and more in an exclusive interview with FOX News host Bret Baier on "Special Report." BRET BAIER,

Leaders from Europe and Canada have held talks on U.S.-led peace efforts to end the war between Russia and Ukraine.

Recent attacks across Ukraine have killed civilians, damaged critical infrastructure and cut heating and power supplies for millions, UN humanitarians report, as temperatures drop below freezing.