Poland's former president and Solidarity leader Lech Walesa believes that global solidarity in economic sanctions against Russia would lead President Vladimir Putin to change his aggressive policy.

Speaking to The Associated Press on Thursday, Walesa said: "We can quickly win with Putin, but we need solidarity."

Walesa said Putin's policy of aggression against Ukraine was "not to be understood" but could result from a historic lack of democracy in Russia.

He spoke as Polish Prime Minister Ewa Kopacz held talks with Hungarian Prime Minister Victor Orban, who is criticized by the West for cultivating political and economic ties with Putin.

The leader of Poland's peaceful transition to democracy, Walesa suggested that Kremlin officials — hit by sanctions in effect now — may eventually remove Putin.