(CNN) — Russian President Vladimir Putin says his country will explore the possibility of carrying out fresh nuclear tests after US President Donald Trump said last week that Washington would begin nuclear testing programs.

“Russia has always strictly adhered and continues to adhere to its obligations under the Comprehensive Nuclear-Test-Ban Treaty (CTBT), and we have no plans to deviate from these commitments,” Putin said at a meeting with members of Russia’s Security Council Wednesday.

At the same time, however, should the US or other countries who are signatories of the CTBT begin to conduct nuclear weapons tests, “Russia would also have to take appropriate and proportionate responsive measures,” Putin added.

The Russian leader said he had asked government ministries and other a

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