Qatar and Mauritania have decided to suspend political and economic ties with Israel, Doha-based Al Jazeera Television reported on Friday.
The news came as Arab and Muslim politicians met in Doha to discuss a response to the three-week-old Israeli offensive on Gaza.
Al Jazeera, which is owned by the Qatari government, did not give a source.
Mauritania has frozen its political and economic ties with Israel in a further degradation of its relations with the Jewish state, Foreign Ministry spokesman Baba Sidi Abdallah told Reuters on Friday.
The northwest African country, one of the few Arab states with diplomatic links to Israel, recalled its ambassador for consultations last week in protest at Israel's military campaign in Gaza.
Earlier on Friday, Syrian President Bashar al-Assad said that An Arab initiative for peace with Israel is dead and Arab countries should end all ties with the Jewish state.
Venezuela and Bolivia broke erlier this week diplomatic ties with Israel over its deadly military offensive in the Gaza Strip and refusal to comply with international calls for a ceasefire, their leftist governments said.
On January 5, Venezuelan President Hugo Chavez expelled Israel's ambassador from Caracas.
Venezuela's decision to cut ties with Israel came just hours after Bolivian President Evo Morales announced his government was breaking diplomatic relations with the Jewish state.
Israel launched on December 27, a massive offensive in Gaza, killing more than 1100 and wounding nearly 5200. A Three of the victims are chidren.
Israeli strikes hit hospitals, schools, mosques and destroyed infrastructure systems in Gaza.
Medecins Sans Frontieres cannot reach sick and wounded civilians in Gaza because of Israel's bombing campaign and may have to pull out if the security situation worsens, officials from the aid group said