Leaders from Arab and Muslim countries will gather in a show of unity in Doha on Monday, a week after Israel's unprecedented strike on Hamas in Qatar prompted widespread anger.
The joint Arab League and Organisation of Islamic Cooperation emergency summit seeks to pile pressure on Israel, which has been facing mounting calls to end the war and humanitarian crisis in Gaza.
Hamas says top officials survived last week's air strike in an upmarket Doha neighbourhood that killed six people and triggered a wave of criticism, including from US President Donald Trump.
"The time has come for the international community to stop using double standards and to punish Israel for all the crimes it has committed," Qatari premier Sheikh Mohammed bin Abdulrahman Al Thani told a preparatory meeting at the