Hello and welcome to bbc news. The United States has officially withdrawn from an arms control pact with russia that dates back to the cold war. The intermediate range Nuclear Forces treaty was a landmark agreement at the time but now the us accusses russia of violating it accuses russia of violating it, which moscow denies. The fear is that without the restrictions a new arms race could get underway. The bbcs Diplomatic Correspondent James Landale has more. It was a crucial moment towards the ending of the cold war. The moment in 1987 when the leaders of the United States and soviet union signed the intermediate range Nuclear Forces treaty. A promise to destroy all their missiles with ranges between 300 miles and 31100 miles. Eliminating at a stroke and entire class of Nuclear Weapons. The mobile ground launched Nuclear Weapons were hard to detect and could strike anywhere in europe within minutes. But in recent years, russia has begun testing and deploying a new Cruise Missile which