U2 is a band.
How to Dismantle an Atomic Bomb is the eleventh studio album by Irish rock band U2 . The Joshua Tree is the fifth studio album by Irish rock band U2 . U2 . The group 's fifth album , The Joshua Tree ( 1987 ) , made them international superstars and was their greatest critical and commercial success . `` With or Without You '' is a song by Irish rock band U2 .