Medvedev, who ranks just behind Putin in the security council, wants Russia to press the attack as its "primary objective," saying US could resume.
The United States has completely halted the exchange of intelligence information with Ukraine, including data on military targets and warnings about Russian missile and drone launches against Ukrainian territory.
The pause, expected to cripple Kyiv’s ability to target Russian forces, follows a contentious meeting last week between Trump and Ukraine’s leader.
The U.S. has paused intelligence-sharing with Ukraine, CIA Director John Ratcliffe said on Wednesday, piling pressure on Ukrainian President Volodymyr Zelenskiy to cooperate with U.S. President Donald Trump in convening peace talks with Russia.