US Secretary of State John Kerry said on Friday that there are still disagreements on the terminology for a Gaza truce but he is confident there is a framework that will ultimately succeed.

He told reporters in Cairo that "serious progress" had been made on a truce but there was more work to do and he was sure that Prime Minister Netanyahu is committed to working towards a ceasefire.

UN Secretary-General Ban Ki-moon, also at the press conference, called for a seven-day humanitarian truce with an extendable 12-hour pause.

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