The United Nations is still struggling to prevent famine in the war-hit Gaza Strip and while there had been some improvement in coordination with Israel, aid deliveries in the enclave still faced difficulties, a senior UN aid official said on Tuesday. Andrea De Domenico, head of the UN Office for the Coordination of Humanitarian Affairs in the Occupied Palestinian Territory, said aid deliveries within Gaza were facing significant checkpoint delays and that last week 41 percent of UN requests to deliver aid to northern Gaza were denied. “We’re dealing with this dance where we do one step forwar…