Russia will develop missiles banned under a Cold War agreement if the US exits the pact, President Vladimir Putin has warned.
His comments follow Nato’s accusation on Tuesday that Russia has already broken the Intermediate-range Nuclear Forces (INF) Treaty.
Signed in 1987 by the US and USSR, it banned both countries’ use of all short and medium-range missiles.
But Mr Putin says the accusation is a pretext for the US to leave the pact.
In televised comments, the Russian leader said many other countries had developed weapons banned under the INF treaty.
“Now it seems our American partners believe that the situation has changed so much that [they] must also have such a weapon,” he said.
“What’s our response? It’s simple – in that case we will also do this.”
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US President Donald Trump has previously said the country would leave the treaty because of Russian actions.
Analysts say Russia sees the weapons as a cheaper alternative to conventional forces.
Arriving for talks with Nato foreign ministers, EU foreign affairs chief Federica Mogherini urged the two countries to save the treaty, saying it had “guaranteed peace and security in European territory for 30 years now”.
What has Nato said?
On Tuesday, the Western military alliance formally accused Russia of breaking the treaty.
“Allies have concluded that Russia has developed and fielded a missile system, the 9M729, which violates the INF Treaty and poses significant risks to Euro-Atlantic security,” the Nato foreign ministers’ statement read.
The statement said the member nations “strongly support” the US claim that Russia is in breach of the pact, and called on Moscow to “return urgently to full and verifiable compliance”.
Speaking after the release of Nato’s statement, US Secretary of State Mike Pompeo said Russia had 60 days to return to compliance with the treaty, after which time the US would suspend its own compliance.
“During this 60 days we will still not test or produce or deploy any systems, and we’ll see what happens during this 60-day period,” he said.
Russia has repeatedly denied breaking the Cold War treaty.
What is the Intermediate-Range Nuclear Forces (INF) Treaty?
- Signed by the US and the USSR in 1987, the arms control deal banned all nuclear and non-nuclear missiles with short and medium ranges, except sea-launched weapons
- The US had been concerned by the Soviet deployment of the SS-20 missile system and responded by placing Pershing and cruise missiles in Europe – sparking widespread protests
- By 1991, nearly 2,700 missiles had been destroyed
- Both countries were allowed to inspect the other’s installations
- In 2007, Russian President Vladimir Putin declared the treaty no longer served Russia’s interests
- The move came after the US withdrew from the Anti-Ballistic Missile Treaty in 2002
In 2014, then US President Barack Obama accused Russia of breaching the INF Treaty after it allegedly tested a ground-launched cruise missile.
He reportedly chose not to withdraw from the treaty under pressure from European leaders, who said such a move could restart an arms race.
The last time the US withdrew from a major arms treaty was in 2002, when President George W Bush pulled the US out of the Anti-Ballistic Missile Treaty, which banned weapons designed to counter ballistic nuclear missiles.
His administration’s move to set up a missile shield in Europe alarmed the Kremlin, and was scrapped by the Obama administration in 2009. It was replaced by a modified defence system in 2016.