Russia could be in a position to attack NATO by 2030 and is ramping up efforts to disrupt Ukraine’s Western backers through sabotage, German intelligence chiefs warned Monday.

Germany is Ukraine’s second-biggest military backer after the United States.

“In terms of personnel and material, Russian armed forces are likely to be capable of carrying out an attack against NATO by the end of the decade at the latest,” BND foreign intelligence chief Bruno Kahl told parliament.

A direct confrontation between Moscow and the U.S.-led military alliance was “becoming an option for Russia,” Kahl said.

Kahl spoke at a hearing in the Bundestag alongside the heads of Germany’s domestic and military intelligence, who took turns to warn of the growing threat from Russia in the context of the invasion of Ukraine.

“Russian espionage and sabotage in Germany are increasing, both qualitatively and quantitatively,” domestic intelligence chief Thomas Haldenwang said.