Russian President Vladimir Putin has suspended a cooperative program 
that commits Russia and the United States to eliminating parts of their 
weapons-grade plutonium stocks.
A presidential decree made public today, Monday 3 October, says the 
implementation of the US-Russia Plutonium Management and Disposition 
Agreementmust be put on hold, "due to Washington’s unfriendly actions 
toward Russia.”
Putin had signed a decree suspending the 2010 agreement under which 
each side committed to destroy tonnes of weapons-grade material because 
Washington had not been implementing it and because of current tensions 
in relations.
According to the deal, the two countries committed themselves to turn
 parts of their weapons-grade plutonium stockpiles into fuel for nuclear
 power plants and other non-weapon forms.
An amending protocol to the agreement, which called on each side to dispose of 34 tons of plutonium, came into force in 2011.
The two countries own the world’s largest stockpiles of plutonium that can be used for nuclear weapons.
US-Russian ties have plunged to levels of acrimony unseen since the 
end of the Cold War following Russia’s military seizure of Ukraine’s 
Crimean Peninsula in March 2014 and an ensuing war between Kiev’s forces
 and Russia-backed separatists that has killed more than 9,500 people.
Washington led a campaign to impose Western economic sanctions on Russia for its role in the Ukraine crisis.
Relations soured further last year when Russia deployed its warplanes
 to an air base in Syria to provide support for Syrian President Bashar 
al-Assad’s troops fighting rebels.
The rift has widened in recent weeks, with Moscow accusing Washington
 of not delivering on its promise to separate units of moderate Syrian 
opposition from "terrorists”.
https://www.neweurope.eu/article/putin-suspends-plutonium-cleanup-agreement-us/