Exactly 80 years since an atomic bomb was used in war for the first time, thousands bowed their heads in prayer in Hiroshima on Wednesday, as the city's mayor warned world leaders about the nuclear warheads that still exist today.

The number of survivors of the U.S. atomic attacks on Hiroshima and Nagasaki is dwindling 80 years later, but they are increasingly speaking out against nuclear weapons

Russia has said it is no longer restricted in the deployment of intermediate and shorter-range missiles, which can carry nuclear warheads.