It's a bit doubtful.
No.
They figured it out themselves a few years later.
The US .
In combat no, only the US has.
During the Cold War (when US want the world to be capitalist while Russia wanted it to be communist) in 1950, US President Harry S. Truman authorized the invention of a bomb stronger than the atomic bomb (A-bomb), which both US and Russia already had in their arsenals, just in case if there would be a World War III when World War II just ended. The US tested its first H-bomb (hydrogen bomb) in 1952, which was thousands of times stronger than the A-bomb, then the Soviet Union (Russia) tested their own H-bomb in 1953.
Eh? When and where did 'Russia bomb the Jews'?
Russia .
Actulla Russia don't about the progress they have done so is imposible to tell. Both, Russia and the US have hydrogen bombs.
The Tsar Bomba by USSR or Russia.
Because Japan had not surrendered yet. There was also a danger that Japan would surrender to Russia as opposed to the US.
It made the United States a world player and started the Cold War with Soviet Russia.
They did but they had decided to surrender before the bombs. August 6 1945, US drops the first bomb. Meanwhile Japan was hoping for Russia to help with the procedure but Russia declared war against Japan and invaded Manchuria making a mess of Japan's service men there. Japan did know to surrender to the United States than surrender to Russia.