Admiral Brad Cooper, the head of the US military's Central Command, "will initially have 200 people on the ground. His role will be to oversee, observe, make sure there are no violations," one senior official told reporters.

Egyptian, Qatari, Turkish and probably Emirati military officials would be embedded in the team, he said. A second official said that "no US troops are intended to go into Gaza."

"The notion is to make it collegial, if you will. And the Israelis will obviously be in constant touch with them," the first official said.

"Putting Admiral Cooper in the room gave a lot of confidence and security to the Arab countries," they added.

"And therefore it was passed on to Hamas that we were taking a very strong role, or the president was taking a very strong position in standing behind his guarantees and his commitments here."

The second official said the US personnel were intended "to help create the joint control center and then integrate all the other security forces that will be going in there to deconflict with IDF (Israeli Defense Forces)."