In the lead-up to the 1948 Palestine war, Husseini opposed both the 1947 UN Partition Plan and King Abdullah's designs to annex the Arab part of British Mandatory Palestine to Jordan, and, failing to gain command of the 'Arab rescue army' ("jaysh al-inqadh al-'arabi") formed under the aegis of the Arab League, built his own militia, "al-jihad al-muqaddas". In September 1948 he participated in the establishment of an All-Palestine Government. Seated in Egyptian-ruled Gaza, this government won limited recognition by Arab states but was eventually dissolved by Egyptian president Gamal Abdel Nasser in 1959. After the war and subsequent Palestinian exodus, his claims to leadership were wholly discredited and he was eventually sidelined by the Palestine Liberation Organization, losing most of his residual political influence.