The upper house of the Russian parliament has voted to rescind Russia's signing of a 1996 international nuclear test ban treaty.
The treaty was never ratified by the US, China, India, Pakistan, North Korea, Israel, Iran or Egypt.
Ukraine Crisis: Cold War 2 Between Russia & USA MORE Dangerous Than Cold War 1 (Prof. Richard Sakwa)
We speak to Prof. Richard Sakwa, Professor of Russian and European Politics at the University of Kent. He discusses the summit..
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