By Nidal al-Mughrabi GAZA (Reuters) – Palestinian Prime Minister Rami Hamdallah survived an assassination attempt in Gaza on Tuesday, the Palestinian Authority said after an apparent roadside bomb targeted his motorcade. The attack on the Western-backed leader, who is spearheading the Authority’s reconciliation efforts with Gaza’s dominant group, Hamas, took place as the White House prepared to hold a meeting on the humanitarian situation in the enclave. There was no immediate claim of responsibility for what one Palestinian Authority security official in Gaza said was a roadside bomb.