US Vice President Joe Biden has singled out Pakistan along with Russia and North Korea and others for making counterproductive moves that only heightened the risk that nuclear weapons could be used in a regional conflict. <br/><br/>In his remarks on nuclear security, Mr. Biden said not just North Korea, but Russia, Pakistan, and others have made counterproductive moves that only increase the risk that nuclear weapons could be used in a regional conflict in Europe, South Asia, or East Asia. Biden said the next administration will have to navigate these dangers and continue leading the global consensus to reduce the role of nuclear weapons in the world.