Armed gunmen stormed the Iranian Embassy in London in April 1980, taking hostages. A tense six-day standoff ensued as the SAS, a highly trained military unit, prepared for an unprecedented r... Read allArmed gunmen stormed the Iranian Embassy in London in April 1980, taking hostages. A tense six-day standoff ensued as the SAS, a highly trained military unit, prepared for an unprecedented raid to resolve the crisis.Armed gunmen stormed the Iranian Embassy in London in April 1980, taking hostages. A tense six-day standoff ensued as the SAS, a highly trained military unit, prepared for an unprecedented raid to resolve the crisis.