President Obama signed an agreement on Monday to cut American and Russian strategic nuclear arsenals by at least one-quarter, a first step in a broader effort intended to reduce the threat of such weapons drastically and to prevent their further spread to unstable regions.

Mr. Obama, on his first visit to Russia since taking office, and President Dmitri A. Medvedev agreed on the basic terms of a treaty to reduce the number of warheads and missiles to the lowest levels since the early years of the cold war.

Source: The New York Times Link Below