Concern that the truce will collapse is growing as fury mounts in the Arab world over President Donald Trump's plan for the U.S. to take over Gaza.

Hamas militants have named the next three Israeli male hostages to be released as part of a fragile ceasefire deal that had teetered in recent days amid a major dispute that raised the specter of fighting resuming in the devastated Gaza Strip.

By James Mackenzie, Jana Choukeir and Maha El Dahan JERUSALEM/DUBAI (Reuters) -Israel's military has called up reservists in preparation for a possible resumption of fighting in Gaza if Hamas fails to meet a Saturday deadline to release more Israeli hostages and a nearly month-old ceasefire breaks down.