In January 1968, North Vietnamese troops and Viet Cong guerrillas launched a huge surprise attack on towns, cities and military bases across South Vietnam. The events of the Tet offensive had a profound impact on American public opinion and marked a turning point in the war.

Plus the roots of the Rohingya crisis, the birth of gospel music, Ireland's Bloody Sunday, and the end of corporal punishment in Britain.

Photo: Julian Pettifer reporting under fire near the Presidential Palace in Saigon, 31st January 1968 (BBC)