Russia has tested a thermobaric bomb said to be the most powerful of its kind in the world.
ORT First Channel television showed a Tupolev Tu-160 strategic bomber dropping its payload over a testing ground causing widespread damage to surrounding buildings.
Colonel General Alexander Rukshin, a deputy chief of the Russian military's general staff said of the weapon: "The tests have shown that the new air-delivered ordnance is comparable to a nuclear weapon in its efficiency and capability."