A wave of Israeli airstrikes hit Yemen's main airport Thursday just as the World Health Organization’s director-general said he was about to board a flight there. One of the U.N. plane’s crew was wounded,

Hamas accused Israel of introducing new conditions while Israel's government said Hamas was reneging on agreements that had already been reached.

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.

Although Israel and Hamas have expressed optimism that progress was being made toward a deal, sticking points remain over the exchange of hostages for Palestinian prisoners and the withdrawal of Israeli troops from Gaza.