António Guterres, the UN secretary general, has again called for a humanitarian ceasefire during a visit to Egypt’s border with Gaza amid urgent efforts to avert famine in the territory after more than five months of devastating war. Guterres arrived on Saturday in al-Arish in Egypt’s northern Sinai, where much of the international relief for Gaza is delivered and stockpiled. The World Food Programme has said Gazans are "starving to death", with famine projected by May in northern Gaza without urgent intervention. There has been sharp and widespread criticism of Israel, which is accused of obstructing aid with cumbersome bureaucracy, arbitrary denials of permission and a refusal to open major access points to Gaza that would allow rapid flows of assistance UN calls for humanitarian ceasefire in Gaza amid urgent efforts to avoid famine