On This Day - What happened 4 May 1979 AD

The Labour government then faced fresh public unease about the direction of the country and a damaging series of strikes during the winter of 1978–79, dubbed the "Winter of Discontent". The Conservatives attacked the Labour government's unemployment record, using advertising with the slogan "Labour Isn't Working". A general election was called after the Callaghan ministry lost a motion of no confidence in early 1979. The Conservatives won a 44-seat majority in the House of Commons and Thatcher became the first female British prime minister.

The Revolutionary Guard, or Pasdaran-e Enqelab, was established by Khomeini on 5 May 1979, as a counterweight both to the armed groups of the left, and to the Shah's military. The guard eventually grew into "a full-scale" military force,becoming "the strongest institution of the revolution."