AP
Wednesday's comments by Deputy Prime Minister Dmitry Rogozin carried by Russian news agencies reflected Moscow's concern with prospective U.S. weapons.
Weapons that have been developed in the U.S. 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.
Without naming the U.S., Rogozin 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."
He described nuclear weapons as a "great equalizer."