The dispute was sparked when Hamas accused Israel of failing to meet some commitments under the truce, including the delivery of tents and other aid, and said it would delay the next hostage release on Saturday.

It’s only three weeks into a fragile ceasefire, and Israel and Hamas are each ratcheting up allegations that the other party has violated the deal.

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.