US-Russia missile row persists
Russia is demanding that a European arms treaty be ratified.

The radar is part of a proposed missile defence system that would also comprise a small number of interceptor missiles in Poland.
Long-running dispute
The US government insists that the system is not directed against Russia but against “rogue states”.
But Russia has said that the US plan threatens its security.
Serdyukov also said that the Russian threat to withdraw from the CFE treaty “is stimulating Nato countries to take a decision as soon as possible” on a demand by Russia, that an updated version of the treaty be ratified.
Nato countries have said they would only ratify a revised version of the CFE treaty once Moscow has lived up to a pledge made in 1999 to pull its troops out of the former Soviet republics of Georgia and Moldova.