The United States and Russia are making tit-for-tat moves with their participation in a nuclear treaty, something politicians and analysts see as a burgeoning arms race.

Russian President Vladimir Putin announced Saturday that Russia is suspending its participation in the Cold War-era Intermediate-Range Nuclear Forces Treaty. The Russian move follows a similar action Friday by the U.S.

Russia Joins US, Will Suspend INF Nuclear Treaty

“The American partners have declared that they suspend their participation in the deal, we suspend it as well,” Putin said in a televised address Saturday.

Russia Joins US, Will Suspend INF Nuclear Treaty

Putin said that Russia will start work on creating new missiles, including hypersonic ones. He told his foreign and defense ministers not to initiate disarmament talks with Washington.

Russia Joins US, Will Suspend INF Nuclear Treaty

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In a statement Friday, U.S. President Donald Trump announced the U.S. is suspending its compliance with the decades-old treaty, accusing the Kremlin of willfully breaking the deal.

“For far too long, Russia has violated the Intermediate-Range Nuclear Forces (INF) Treaty with impunity, covertly developing and fielding a prohibited missile system that poses a direct threat to our allies and troops abroad,” Trump said.

“We will not remain constrained by its terms while Russia misrepresents its actions,” he added.

But later Friday, speaking to reporters, Trump left open the possibility of some sort of deal.

“I hope that we are able to get everybody in a very big and beautiful room and do a new treaty that would be much better,” he said. “Certainly, I would like to see that. But you have to have everybody adhere to it.”

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U.S. Secretary of State Mike Pompeo said Saturday in a statement, "The United States has concluded that extraordinary events related to the subject matter of the treaty arising from Russia's continued noncompliance have jeopardized the United States' supreme interests, and the United States can no longer be restricted by the treaty while Russia openly violates it. If Russia does not return to full and verifiable compliance with the treaty by eliminating all 9M729 missiles, their launchers, and associated equipment in this six-month period, the treaty will terminate."

China’s foreign ministry said Saturday that Beijing is opposed to the U.S. withdrawal action and urges the United States and Russia to handle their differences through constructive dialogue.

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The INF treaty, signed by the U.S. and the Soviet Union in 1987, was the world’s first arms control pact to prohibit an entire class of weapons, banning ground-launched cruise missiles with a range of 500 to 5,500 kilometers.

Yet the U.S. has been become increasingly vocal about what it says are Russia’s blatant violations.

U.S. defense and intelligence officials charge those violations date back to at least 2014, when Russia began deploying its 9M729 missile, following years of tests designed to skirt the treaty’s constraints.

Now, officials say, Russia is fielding multiple military battalions that are equipped with the missile in question.

“We must respond,” U.S. Secretary of State Mike Pompeo told reporters Friday. “We can no longer be restricted by the treaty, while Russia shamelessly violates it.”

“We provided Russia an ample window of time to mend its ways and for Russia to honor its commitment. Tomorrow that time runs out,” he said.

Saturday the U.S. will provide the Kremlin and other former Soviet States with formal notice of its intent to withdraw from the INF Treaty, triggering a six-month window.

Officials say if Moscow refuses to verifiably destroy the missiles, as is expected, the treaty will terminate, and the U.S. will be free to pursue its own intermediate range, ground-launched ballistic or cruise missiles.

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Russian officials reacted quickly Friday to the announcement, denying any treaty violations, while alleging it is Washington that wants to expand its missile arsenal.

The U.S. withdrawal deals “a serious blow to the international arms control system and the system of non-proliferation of weapons of mass destruction, which exist for now,” Deputy Foreign Minister Sergei Ryabkov told reporters.

Ryabkov also suggested other arms control agreements, like the New START treaty, which limits both countries to fewer than 1,550 strategic nuclear warheads, could also be in jeopardy.