A defector who flew his MiG-21 to Syria in June 1982 revealed that the Iraqi Air Force had only three squadrons of fighter-bombers left that were capable of mounting offensive operations into Iran. The Iraqi Army Air Corps was in slightly better shape, and could still operate more than 70 helicopters.
By 1 June, with the arrival of a further 5,000 British troops of the 5th Infantry Brigade, the new British divisional commander, Major General Jeremy Moore RM, had sufficient force to start planning an offensive against Stanley.
With Iranian success on the battlefield, the United States increased its support of the Iraqi government, President Ronald Reagan decided that the United States "could not afford to allow Iraq to lose the war to Iran", and that the United States "would do whatever was necessary to prevent Iraq from losing". Reagan formalized this policy by issuing a National Security Decision Directive to this effect in June 1982, and removed Iraq from the list of countries "supporting terrorism" and sold weapons such as howitzers to Iraq via Jordan.
Plans were drawn up for half the Welsh Guards to march light on the night of 2 June, whilst the Scots Guards and the second half of the Welsh Guards were to be ferried from San Carlos Water in the Landing Ship Logistics (LSL) Sir Tristram and the landing platform dock (LPD) Intrepid on the night of 5 June.
On the night of 11 June, after several days of painstaking reconnaissance and logistic build-up, British forces launched a brigade-sized night attack against the heavily defended ring of high ground surrounding Stanley. Units of 3 Commando Brigade, supported by naval gunfire from several Royal Navy ships, simultaneously attacked in the Battle of Mount Harriet, Battle of Two Sisters, and Battle of Mount Longdon.
The conflict lasted 74 days and ended with the Argentine surrender on 14 June, returning the islands to British control. In total, 649 Argentine military personnel, 255 British military personnel, and three Falkland Islanders died during the hostilities.
On June 20, 1982, Saddam announced that he wanted to sue for peace and proposed an immediate ceasefire and withdrawal from Iranian territory within two weeks. Khomeini responded by saying the war would not end until a new government was installed in Iraq and reparations paid. He proclaimed that Iran would invade Iraq and would not stop until the Ba'ath regime was replaced by an Islamic republic.
On 20 June, the British retook the South Sandwich Islands, which involved accepting the surrender of the Southern Thule Garrison at the Corbeta Uruguay base, and declared hostilities over. Argentina had established Corbeta Uruguay in 1976, but prior to 1982 the United Kingdom had contested the existence of the Argentine base only through diplomatic channels.
Prince William was born at Lindo Wing of St Mary's Hospital, London, at 9:03 pm on 21 June 1982 as the first child of Charles, Prince of Wales—heir apparent to Queen Elizabeth II—and Diana, Princess of Wales. He was the first child born to a Prince and Princess of Wales since Prince John in 1905. William's parents affectionately called him "Wombat" or "Wills"—a name coined by the press.