He was the only son of the second king of Iraq,
Ghazi, who was killed in a mysterious motor car accident when Faisal was three. For most of his reign, his uncle
'Abd al-Ilah ruled as
regent until Faisal came of age in
1953.
As a teenager, Faisal attended
Harrow School in the
United Kingdom with his cousin
King Hussein of
Jordan. The two boys were close and, reportedly, planned even then to merge their two realms to counter what they considered the threat of militant
pan-Arab nationalism.
On
February 1 1958, neighbouring
Syria joined with
Nasser's Egypt to form the
United Arab Republic. This prompted the
Hashemite kingdoms of Iraq and Jordan to strengthen their position by establishing a similar defence. Just two weeks later, on
February 14, this was signed into existence as the
Arab Federation of Iraq and Jordan. Faisal, as the senior member of the Hashemite family, became head of state. However, the reign of Faisal, together with the new state, came to an end a mere five months later. During the summer Hussein asked for Iraqi military assistance in Jordan.