From the conclusion of Tarkovsky's
The Sacrifice ("Alexander, a journalist and former actor and philosopher, tells his little son how worried he is about the lack of spirituality of modern mankind. In the night of his birthday, the third world war breaks out. In his despair Alexander turns himself in a prayer to God, offering him everything to have the war not happened at all.")
Alexander keeps his promise to God
Blind Willie Johnson - Trouble Will Soon Be Over ("The footage is acted by Chris Thomas King and comes form the film "The Soul of A Man" telling the story of Skip James and directed by Wim Wenders.")
From
Children of Men:
The Temporary Ceasefire