White House: Ceasefire deal possible but not certain

Jake Sullivan, the White House's national security adviser, has said reaching a Gaza ceasefire deal before Donald Trump becomes US president on 20 January is possible but not certain.

This comes after Trump warned that "all hell will break out" if a deal is not reached by the time he takes office.

Sullivan said on Sunday: "We are very close to a deal, but at the same time we are still far away because there is no agreement.

"It is possible to get a deal before January 20, but I cannot be sure that we will succeed."