US accuses Russia of violating 1987 weapons treaty, doesn't offer details of allegation

FILE - Int this Dec. 8, 1987, file photo, U.S. President Ronald Reagan, right, shakes hands with Soviet leader Mikhail Gorbachev after the two leaders signed the Intermediate Range Nuclear Forces Treaty to eliminate intermediate-range missiles during a ceremony in the White House East Room in Washington. In an escalation of tensions, the Obama administration accused Russia on July 28, 2014, of conducting tests in violation of a 1987 nuclear missile treaty, calling the breach "a very serious matter" and going public with allegations that have simmered for some time. The treaty confrontation comes at a highly strained time between President Barack Obama and Russian President Vladimir Putin over Russia's intervention in Ukraine and Russia's grant of asylum to National Security Agency leaker Edward Snowden.(AP Photo/Bob Daugherty, File) (The Associated Press)

The Obama administration's claim that Russia violated a key nuclear weapons treaty leaves the future of the 26-year-old accord in question.

A State Department report released Tuesday says Russia is violating a treaty that bans the possession, production or test-flight of ground-launched cruise missiles with a range of 300 to 3,400 miles.

Russia has not officially responded to the report.

The administration has not said where and when the alleged violation occurred.