Added On February 3, 2019

Washington has announced plans to withdraw from its Intermediate-Range Nuclear Forces (INF)?Treaty with Russia.
World News has the story.
U.S. Secretary of State Mike Pompeo made the announcement on Friday morning , marking an end to the decades-old nuclear deal. 
Pompeo cited Russia's violation of the deal as the reason for the U.S. exit, a claim that has been repeatedly denied by Moscow. 
SOUNDBITE(English): MIKE POMPEO, US Secretary of State
"For years, Russia has violated the terms of the Intermediate-Range Nuclear Forces Treaty without remorse."
Pompeo said the withdrawal will be effective within six months, but also noted that Washington would reconsider pulling-out of the treaty if Russia takes actions to comply with its terms.
In response, Russia's foreign ministry said Russia reserves the right to and will respond if the United States quits the deal. 
The INF Treaty marked the first-ever nuclear disarmament pact between Washington and Moscow and a major step forward in restricting a dangerous arms race. 
But for years, the two sides have been accusing each other of violating the arms control agreement.