Yes there are a number of countries that have atomic wepons. However since WW2 an atomic bomb has never been set off in anger.
Russia
all nuclear explosives use some fission. even now.
More & higher yield atomic bombs, I guess.
Atomic bombs were dropped in WWII
Yes, uranium can be used in atomic bombs.
No, but now we have two types of atomic bombs: fission and fusion. The world war 2 bombs were only fission.
Total war means atomic bombs.
During WWII the atomic bombs were dropped in Hiroshima and Nagasaki
No. The US gave them cryptic messages about the bombs and never told them they had atomic bombs.
As of now (2012), Russia has slightly more than the US.
no
Uranium which is a fuel is used in atomic bombs and in nuclear power stations.