Russian President Vladimir Putin on Thursday said an Obama-era nuclear weapons pact would lapse unless the US took an interest in renewing it. The New Strategic Arms Reduction Treaty (New START) pact limits the number of deployed nuclear warheads, missiles and bombers and is due to expire in 2021 unless renewed. […] The treaty limits the US and Russia to a maximum of 1,550 deployed nuclear warheads and 700 deployed missiles and bombers, well below Cold War caps. It was signed in 2010 by former US President Barack Obama and then-Russian President Dmitry Medvedev. It is one of the key...