President Donald Trump announced Saturday that the US is pulling out of the landmark Intermediate-Range Nuclear Forces Treaty with Russia, a decades-old agreement that has drawn the ire of the President.

President Donald Trump announced Saturday that the US is pulling out of the landmark Intermediate-Range Nuclear Forces Treaty with Russia, a decades-old agreement that has drawn the ire of the President.

“Russia has violated the agreement. They've been violating it for many years,” Trump told reporters before boarding Air Force One to leave Nevada following a campaign rally. “And I don't know why President Obama didn't negotiate or pull out. And we're not going to let them violate a nuclear agreement and go out and do weapons and we're not allowed to,” he said.

“We're the ones that have stayed in the agreement and we've honoured the agreement.”

“But Russia has not, unfortunately, honoured the agreement. So we're going to terminate the agreement. We're gonna pull out,” he said of the agreement, which was signed in December 1987 by former President Ronald Reagan and former USSR President Mikhail Gorbachev.

The treaty forced both countries to eliminate ground-launched ballistic and cruise missiles with ranges between approximately 300 and 3,400 miles. It offered a blanket of protection to the United States’ European allies and marked a watershed agreement between two nations at the centre of the arms race during the Cold War.

Former State Department spokesman Rear Adm. John Kirby, a CNN military and diplomatic analyst, explained that the treaty “wasn't designed to solve all of our problems with the Soviet Union,” but was “designed to provide a measure of some strategic stability on the continent of Europe.”

“I suspect our European allies right now are none too happy about hearing that President Trump intends to pull out of it,” he said.

The Trump Administration has said repeatedly that Russia has violated the treaty and has pointed to their predecessors in the Obama administration who accused Russia of violating the terms of the agreement.

In 2014, CNN reported that the US had accused Russia of violating the INF Treaty, citing cruise missile tests that dated to 2008.

CNN reported in 2014 that the United States at the time informed its NATO allies of Russia's suspected breach. However, it wasn't until recently that NATO officially confirmed Russia's activity constituted a likely violation.

NATO Secretary General Jens Stoltenberg said earlier this month that the military alliance remained “concerned about Russia's lack of respect for its international commitments, including the Intermediate-Range Nuclear Forces Treaty, the INF Treaty.”

He continued, “after years of denials, Russia recently acknowledged the existence of a new missile system, called 9M729. Russia has not provided any credible answers on this new missile. All allies agree that the most plausible assessment would be that Russia is in violation of the treaty. It is therefore urgent that Russia addresses these concerns in a substantial and transparent manner.”

Moscow's failure to adhere to the agreement was also addressed in the most recent Nuclear Posture Review published by the Defense Department in February, which said Russia “continues to violate a series of arms control treaties and commitments.”

Pulling out of the treaty could provoke a similar arms race across Europe akin to the one that was occurring when the agreement was initially signed in the 1980s.