Putin's top ally in Ukraine arrested, say authorities

Rescuers search for bodies under the rubble of a building destroyed by Russian shelling, amid Russia's invasion of Ukraine, in Borodyanka, Kyiv region, Ukraine April 11, 2022. REUTERS/Zohra Bensemra

LVIV, Ukraine (Reuters) - Ukraine on Tuesday said it arrested the Kremlin's most prominent ally in the country as Russian President Vladimir Putin gave his strongest signal yet the war will grind on, warning peace talks were at a dead end.

In February, Ukraine said Viktor Medvedchuk, the leader of the Opposition Platform - For Life party, escaped from house arrest after the authorities opened a treason case against him.