Russia has suspended a co-operation agreement with the US in nuclear energy research and development.
A statement released by the government claims Washington violated the agreement by imposing sanctions to Russia over the crisis with Ukraine.
It added in April 2014 the country’s leading nuclear firm Rosatom received a letter from the US Department of Energy announcing a suspension of co-operation due to that crisis.
The agreement, which was signed by both countries in September 2013, included scientific and technical co-operation in the use of nuclear energy for peaceful purposes including safety, the design of power plants and innovative types of reactors and management of radioactive waste.
The Russian Government said: “Such a step from the US is a fundamental breach of conditions of the agreement.”
Commenting on the announcement, Josh Earnest, Press Secretary of the White House told reporters: “It’s certainly within the national interest of the United States of America for us to prioritise nuclear security and I think any impartial observer would conclude that it’s within the national security interests of Russia for nuclear security to be prioritised.
“There is an opportunity for the United States and Russia to work together in pursuit of those goals. In fact, we have recently and we’re hopeful that we’ll be able to continue to do that moving forward, even in the midst of some vigorous disagreements on other issues.”