The incoming Joe Biden administration stepped in to renew New START for another five years on 3 February, two days before the treaty was due to expire.
New START places limits on the US and Russia in terms of warheads, missiles and launchers that can be used for a nuclear attack on each other’s homelands (‘strategic’ weapons).
Each military can only have 700 ‘deployed’ (operational and armed) methods of attack at any one time.
They can split up that 700 number between…