Hamas will not recognize Israel as a state, Hamas Deputy Political Director Mousa Abu-Marzouk said here on Tuesday, according to Interfax news agency.
Abu-Marzouk also slashed at the Palestine Liberation Organization's recognition of Israel, saying it was a historical mistake, Xinhua reported.
"Recognition of Israel's independence by the Palestine Liberation Organization was a historic mistake," he said.
Also on Tuesday, a senior Fatah member said in Moscow that Palestine was not going to proclaim its independence unilaterally and revealed Russia would back Palestine's claim at the UN to recognize its independence.
"Russian Foreign Minister Sergei Lavrov confirmed during our meeting that Russia supported this process," said Azzam al-Ahmad, member of the Central Committee of Fatah.
Al-Ahmad also accused Israel's attempts of hampering and freezing Middle East peace process.
On Monday, Fatah and its rival Hamas held a closed-door meeting on implementation of the Cairo deal in Moscow.
The two Palestinian factions signed a preliminary agreement in Cairo on reconciliation early this month, paving the way for forming an interim government to prepare for elections.