[2] On May 25, 2021, he was honored by King Abdullah II of Jordan with a posthumous State Centenary Medal at an Independence Day celebration.

Al-Kailani was born in As-Salt, the capital of Balqa and a bustling city at the heart of the country during the establishment of the Emirate of Transjordan on March 30, 1933.

[4] Thus, he and his brothers Subhi, Musa, and Ibrahim had acquired some rudimentary academic skills before entering primary school.

He engaged with various prominent figures in the country across different spheres, and the school environment, influenced by its teachers and students, was characterized by an openness to political and military developments in the Arab region.

Patriotic marches advocating for Arab freedom and genuine independence were common occurrences and deeply resonated with Al-Kailani.

[1] A prosecutor in the Armed Forces, Al-Kailani's initial claim to fame was uncovering a coup plot against King Hussein orchestrated by high-ranking officers in the military, headed by General Mahmoud al Rousan.

Following this, he tendered his resignation, accusing certain Jordanian government officials of attempting to frame him as the instigator of a potential conflict which he had sought to avoid.

[11] After the main phase of Black September, he was appointed as Advisor to the King for National Security in 1971 and later served as Ambassador to the Ministry of Foreign Affairs from 1971 to 1972.

This action followed a ruling issued by the Amman Court of First Instance, which imposed a temporary seizure on their properties and real estate due to outstanding payments related to commercial transactions, such as housing construction projects.

The ruling encompassed nine individuals, including the late Al-Kailani's wives and children, as well as land and real estate holdings in Mafraq, Zarqa, and Amman.