The two oil tankers, identified as the Kairos and Virat, were empty and sailing to Novorossiysk, a major Russian Black Sea oil terminal.

Ukrainian naval drones hit two oil tankers from Russia's so-called "shadow fleet" as they travelled through the Black Sea, Ukrainian officials have said. Footage verified by the BBC shows waterborne drones speeding through the waves into the vessels, before detonating into a ball of flame, sending black smoke into the air.

The attack came as U.S. officials were expected to hold peace talks with Ukrainian and Russian officials in the coming days.

Ukraine has used Sea Baby naval drones to strike two Russian oil tankers in the Black Sea. An official from Ukraine’s security services told The Associated Press about the attack on Saturday.

Ukraine says it used sea drones to strike two oil tankers that are part of Russia’s sanctioned shadow fleet and were a few dozen kilometres off the coast of Turkey.

A Russian drone and missile strike on the Ukrainian capital Kyiv has killed at least one person and injured seven others, city officials say. Early on Saturday morning residential buildings in several districts were hit and loud explosions could be heard across the city.

A Putin ally has called for more detail in Trump's peace plan for Ukraine. Follow Newsweek's live coverage of the war.

A push by the Trump administration to end Russia's war on Ukraine appears to make headway, with Kyiv saying Zelenskyy could visit D.C. within days to finalize a deal.

In Russia, a major oil terminal near the port of Novorossiysk stopped operations Saturday after a strike by unmanned boats damaged one of its three mooring points, according to a statement from the Caspian Pipeline Consortium, which owns the terminal.

Russian drone and missile attacks on Kyiv killed at least two people and wounded 15 Saturday, officials said, as renewed U.S.-led peace negotiations gathered momentum.