Russia insists UK and French nuclear arsenals be included in disarmament talks

In 2023, Putin suspended Russia's participation, but Moscow said it would continue to observe the warhead limits. Putin this month made his offer to maintain the treaty's limits as Ukraine tries to convince Trump to impose harsher sanctions on Russia over its February 2022 invasion of its smaller neighbour.

Russia and the US have by far the biggest nuclear arsenals in the world. New START caps the number of deployed strategic nuclear warheads at 1,550 and the number of delivery vehicles - missiles, submarines and bomber planes - at 700 on each side.