Moscow ? The top Russian and U.S. military officers signed a cooperation agreement Monday that lays out plans for joint activities for the coming year, officials said.

Marine Corps Gen. Peter Pace, chairman of the Joint Chiefs of Staff, said he and Gen. Yuri Baluyevsky, his Russian counterpart, signed the document, but did not disclose details of the proposals.

Russian Foreign Minister Sergey Lavrov said the former Cold War foes bear the brunt of responsibility for ‘supporting strategic security in the world.

“This is a unique responsibility, and other countries look to us with the hope that we will continue to support it,” Lavrov said after meeting with Pace.

Earlier, Pace lay a wreath at the tomb of the unknown soldier and called the experience “a very poignant reminder to me of the very special relationship our two nations have had for many years.”

Russia has been highly critical of the American-led campaign in Iraq, while the U.S. has criticized Russia’s cooperation with Iran despite that country’s alleged nuclear weapons program. Russia has also objected to U.S. plans to deploy missile defenses in NATO nations in Eastern Europe.