The expiry of the last nuclear weapons treaty between the United States and Russia is no immediate cause for alarm – long-range arms controls have been rendered all but irrelevant by a new generation of weaponry and defence systems, as well as the emergence of other superpowers including China, says Mary Dejevsky I t was supposed to be the end of an era, and the Cold War era at that. On Thursday 5 February, the last remaining arms control treaty between the United States and Russia expired. But