International diplomacy to prevent the war in Gaza from spreading into a wider regional conflict intensified Friday, with the British and French foreign ministers making a joint trip to Israel while internationally mediated cease-fire talks in Qatar were expected to enter their second day.

The new push for an end to the Israel-Hamas war came as the Palestinian death toll in Gaza climbed past 40,000, according to Gaza health authorities, and fears remained high that Iran and Hezbollah militants in Lebanon would attack Israel in retaliation for the killings of top militant leaders.