Russia has condemned US plans to withdraw from a Cold War-era nuclear weapons treaty and threatened to retaliate for a “very dangerous step”.

On Saturday, President Trump said he intended to “terminate” the three-decade-old 1987 Intermediate-Range Nuclear Forces (INF) treaty.

He said Russia had been “violating it for many years”.

The deal banned ground-launched medium-range missiles, with a range of between 500 and 5,500km (310-3,400 miles).

In the last five decades the US and Russia have signed a range of joint agreements to limit and reduce their substantial nuclear arsenals.

Abandoning the INF – negotiated by US President Ronald Reagan and Soviet leader Mikhail Gorbachev in 1987 – would mark a significant setback for arms control, analysts say.

Read more about this development here.