War is the third studio album by Irish rock band U2. It was produced by Steve Lillywhite, and was released on 28 February 1983 on Island Records. The album is regarded as U2's first overtly political album, in part because of songs like "Sunday Bloody Sunday" and "New Year's Day", as well as the title, which stems from the band's perception of the world at the time; lead vocalist Bono stated that "war seemed to be the motif for 1982."

"Sunday Bloody Sunday" is a song by Irish rock band U2. It is the opening track from their 1983 album War and was released as the album's third single on 21 March 1983 in the Netherlands and West Germany. "Sunday Bloody Sunday" is noted for its militaristic drumbeat, harsh guitar, and melodic harmonies. One of U2's most overtly political songs, its lyrics describe the horror felt by an observer of the Troubles in Northern Ireland, mainly focusing on the 1972 Bloody Sunday incident in Derry where British troops shot and killed unarmed civil rights protesters. Along with "New Year's Day", the song helped U2 reach a wider listening audience. It was generally well received by critics on the album's release.