Donald Trump should allow Ukraine to use America’s long-range Tomahawk cruise missiles to strike targets deep inside Russia, Finnish Prime Minister Petteri Orpo said.

Axar.az reports that in an interview with POLITICO, Orpo warned that Russia represents a “permanent threat” to European security and urged the U.S. president to grant Ukraine the weapons it needs to defend itself and bring Vladimir Putin to the negotiating table.

Orpo’s comments came as Trump announced sweeping sanctions on Russian state-owned oil firms, in the most significant step he has taken as president to put pressure on Putin over the Ukraine war.

“Putin believes only in power,” Orpo said as he arrived in Brussels for a summit of European Union leaders at a pivotal moment in Ukraine’s more than three-year war against Russian invaders. “If we want to stop the war we have to be on the same level or even stronger” than Russia, Orpo said.