Israel and Hamas on Wednesday accused each other of obstructing negotiations for a ceasefire in the Gaza Strip, after Israel withdrew its negotiators from the talks the previous day. Israeli media reported on Wednesday that the refusal by the Palestinian Islamist militia Hamas to hand over a list of the names of the hostages it still holds is hindering progress in the negotiations.

U.S. officials say both Hamas and Israel are making concessions toward securing a deal, but tempered optimism with differences remaining on key issues.