What is the worlds strongest tank?

Answer 1

In terms of armor i'd say the British Challenger II tank

But in terms of firepower i think it is Equal to USA's Abrams tank

Both tanks use the Chobham armor but Challenger II uses a more advance class of chobham armor

http://en.wikipedia.org/wiki/Challenger_2

Answer 2

Well... in 1990 the Russians stole the American allies equipment finding a piece of paper with the American's address to where they keep the rest of their tanks. the Russians stole their strongest tank called the T-99 night hawk.