While only the US will have to disarm. From Global Security Newswire:

Russian Deployed Strategic Arsenal Below Limit Set by New START

Thursday, June 2, 2011

By Martin Matishak

Global Security Newswire

WASHINGTON — Russia’s stockpile of deployed strategic nuclear warheads is already below the ceiling required by the U.S.-Russian arms control treaty that took effect earlier this year, according to figures released on Wednesday (see GSN, May 19).

(Jun. 2) – A Russian Topol-M ICBM, shown on display at a parade last month in Moscow’s Red Square. Russia’s quantity of deployed strategic nuclear warheads is already below the maximum permitted by a new arms control treaty with the United States (Natalia Kolesnikova/Getty Images).

The data was included in the first aggregate accounting of both nations’ atomic armaments, released in compliance with the New START pact.

As of February 5, the day the treaty entered into force, Moscow possessed 1,537 deployed strategic warheads, according to a U.S. State Department fact sheet. That is beneath the 1,550-weapon cap the nations are required to meet within seven years.

Russia also came in under the treaty limit of 700 deployed strategic warhead delivery systems with 521 ICBMs, submarine-launched ballistic missiles and heavy bombers, the brief document states. The nation in total had 865 deployed and nondeployed bombers and ICBM and SLBM launchers. The pact calls for a maximum of 800 delivery systems in the field or on reserve.

http://gsn.nti.org/gsn/nw_20110602_6659.php