Weapons that have been developed in the United States under the so-called ‘‘prompt global strike’’ program would be capable of striking targets anywhere in the world in as little as an hour with deadly precision. Russia, which has lagged far behind in developing such weapons, has described them as destabilizing.

Without naming the U.S., Rogozin told lawmakers in comments carried by Russian news agencies said that those who ‘‘experiment with non-nuclear strategic weapons’’ should remember that ‘‘if we come under attack, we will undoubtedly use nuclear weapons in certain situations to defend our territory and state interests.’’