Qatar said on Friday it had frozen its ties with Israel and would ask the Israel to close its trade office in Doha and its staff to leave within a week.
Qatar is the only Gulf Arab state to have ties with Israel.
Prime Minister Sheikh Hamad bin Jassim al-Thani said the office could be reopened if the situation improved.
Al-Jazeera reported earlier on Friday that Mauritania had broken off relations with Israel as well.
Also on Friday, Turkey's prime minister on Friday said Israel should be barred from the United Nations while it ignores the body's calls to stop fighting in Gaza.
Bolivian President Evo Morales said on Wednesday that his country is breaking diplomatic tiesbreaking diplomatic ties with Israel over its 19-day-old campaign in Gaza, and said he will ask the International Criminal Court to bring genocide charges against top Israeli officials.