Russia believes the United States is ultimately trying to ruin the New START nuclear weapons treaty by moving to exit the Cold War-era Intermediate-range Nuclear Forces Treaty, Foreign Minister Sergei Lavrov said on Friday.

A senior U.S. official said on Thursday that Russia must scrap its 9M729 nuclear-capable cruise missiles and launchers or modify the weapons' range to return to compliance with the 1987 INF treaty and avert a U.S. pullout from the pact.

"The impression is given that the ground is simply being prepared for this document (New START) also to be ruined as a result," Lavrov told reporters at a news conference in Milan.