Russian President Vladimir Putin signed a bill suspending the 2010 New START treaty (Picture: AP)

Russian President Vladimir Putin has officially suspended the last nuclear arms treaty that remained with the US.

Putin signed a bill formally suspending the 2010 New START treaty on Tuesday.

It comes after he declared last week in a state-of-the-union address that the Kremlin would be suspending its participation in the nuclear arms deal.

Both houses of the Russian parliament ratified Putin’s bill last week. Putin’s signature makes the law effective immediately. The bill states that the president can decide if the country will return to the deal.

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Russian President Vladimir Putin signed a bill formally suspending the 2010 New START treaty on Tuesday.