New START Treaty | 27 Nov 2019

The New START Treaty is a treaty between the United States of America and the Russian Federation on measures for the further reduction and limitation of strategic offensive arms.

It entered into force on 5^th February, 2011.
It is a successor to the START framework of 1991 (at the end of the Cold War) that limited both sides to 1,600 strategic delivery vehicles and 6,000 warheads.
It continues the bipartisan process of verifiably reducing U.S. and Russian strategic nuclear arsenals by limiting both sides to 700 strategic launchers and 1,550 operational warheads.
It will lapse in February 2021 unless extended for a five-year period.

Intermediate-Range Nuclear Forces Treaty

INF Treaty is another treaty that was signed during the Cold War.
It was a nuclear arms-control accord reached by the United States and the Soviet Union in 1987 in which the two nations agreed to eliminate their stocks of intermediate-range and shorter-range (or “medium-range”) land-based missiles (which could carry nuclear warheads).
The United States withdrew from the Treaty on 2^nd August 2019.

Note:

The term ‘strategic offensive arms’ applies to nuclear warheads deployed by Strategic Nuclear Delivery Vehicles (‘SNDVs’).
SNDVs are Inter-Continental Ballistic Missiles (‘ICBMs’) with a range exceeding 5,500 kilometres, strategic bombers, warships (including strategic submarines ) and cruise missiles, including air and sea-launched cruise missiles.