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.

Israeli Prime Minister Benjamin Netanyahu said on Tuesday that the ceasefire in Gaza would end if Hamas did not return hostages held in the enclave by noon on Saturday.

Hamas says it will delay the further release of hostages in the Gaza Strip after accusing Israel of violating a fragile ceasefire that now faces its most serious crisis since it began three weeks ago.