"Even as the two presidents hailed the treaty, however, they found no common ground on American plans to build an antimissile shield in Europe to counter any Iranian threat. Mr. Obama refused Russian demands to include limits on missile defense in the treaty, nearly scuttling the agreement. In the days leading up to the ceremony here, Russian officials alternately claimed the agreement would bind the program or complained that it did not and threatened to withdraw if it went forward.

The treaty, if ratified by lawmakers in both countries, would require each country to deploy no more than 1,550 strategic warheads, down from 2,200 allowed in the Treaty of Moscow signed by President George W. Bush in 2002. Each would be limited to 800 total land-, air- and sea-based launchers — 700 of which can be deployed at any given time — down from 1,600 permitted under the Strategic Arms Reduction Treaty of 1991, or Start."

Here.

-Cat