Why was King Abdullah I assassinated at Al-Aqsa Mosque in 1951?

King Abdullah I was assassinated at Al-Aqsa Mosque in Jerusalem on July 20, 1951, by a young Palestinian who was frustrated by the king's hostility toward Palestinian nationalism.12

Following the 1948 Arab-Israeli War, Abdullah had annexed the West Bank and East Jerusalem into his kingdom, a move that was opposed by most other Arab nations, which had hoped for the creation of an independent Palestinian Arab state in that territory. This annexation, combined with the influx of a large refugee population that was hostile to the Hashemite regime, led to significant political and economic instability, ultimately contributing to the climate of resentment that resulted in the king's assassination.12