01 Mar 1973, Hanoi, Vietnam — A group of Vietnamese people stand in the middle of an expanse of rubble of houses in Kham Thien, a part of Hanoi in North Vietnam in March 1973. Bricks found in the ruins are used and piled for reconstruction. The United States of America flew about 2,000 air attacks on cities and targets in North Vietnam during the “Christmas bombings” in 1972. The peace agreement was signed on the 27th of January in 1973 in Paris. Photo: Werner Schulze — Image by © Werner Schulze/dpa/Corbis