Israeli fire Friday pushed the Palestinian death toll in Gaza to above 800, as Washington pressed Israel and Hamas to agree a week-long humanitarian ceasefire and thrash out a durable truce.
In the West Bank, Palestinian factions declared a "Day of Rage" after a night of clashes over Israel's Gaza offensive, with one Palestinian killed.
US Secretary of State John Kerry said Wednesday that diplomacy to end the Gaza bloodshed has made progress, but warned more time was needed.
"We have certainly made some steps forward, but there is still work to be done," Kerry said in Jerusalem as he started a meeting with UN Secretary-General Ban Ki-moon.
Washington's top diplomat flew into Tel Aviv Wednesday, defying a US flight ban, to try to broker an end to violence in Gaza, which has killed hundreds and hobbled Israel's main airport.
Secretary of State John Kerry jetted in from Cairo to Ben Gurion airport, with reporters banned from reporting the trip until his custom Boeing 757 touched down.
Egypt's foreign ministry on July 20 summoned Turkey's charge d'affaires over criticism of Cairo's handling of the war between Israel and Hamas in neighbouring Gaza.
Turkey and Egypt withdrew their ambassadors last year after the military ousted Egyptian Islamist president Mohamed Morsi, who had forged closer ties with Turkey's Prime Minister Recep Tayyip ErdoÄan.
Palestinian president Mahmud Abbas was to head to Turkey on July 18 to push a ceasefire in Gaza after Egyptian-mediated negotiations stalled and Israel launched a ground operation.
Cairo has been the hub of intense negotiations to end the 11-day conflict between Hamas and Israel, after the Palestinian militants in Gaza rejected an initial Egyptian truce proposal.