, Oct. 24 -- Russian President Vladimir Putin on Thursday said that the latest U.S. sanctions targeting Russian oil companies are unlikely to have a significant impact on the country's economy.

Describing the measures as "an attempt to put pressure on Russia" and "unfriendly," Putin added that they do nothing to improve Russia-U.S. relations.

Responding to U.S. President Donald Trump's Wednesday remarks about canceling a planned meeting with him, Putin said Russia has consistently supported ongoing dialogue. He also cautioned that approaching a Russia-U.S. summit without proper preparation would be a mistake.

The U.S. Treasury Department announced sanctions on Russia's two largest oil producers, Rosneft and Lukoil, aiming to pressure M...