Palestinian President Mahmoud Abbas on Monday reacted with astonishment and fury to the leak of hundreds of secret documents on a decade of peace talks with Israel, which contained 'damning revelations' on the amount of land in annexed east Jerusalem that the Palestinians were willing to cede to Israel. "Publishing such documents at this timing is on purpose of mixing matters between the Palestinian proposals and teh Israeli one. This is shameful," Abbas told reporters in Cairo on Monday after talks with Paresident Hosni Mubarak. He said Palestinian negotiators had never sought to hide the terms of their peace talks with Israel from Arab neighbours. "With everything we have done - in terms of activities with the Israelis or the Americans - we have given the Arabs details," Egypt's official Middle East News Agency (MENA) quoted Abbas as saying. The cache of documents, the first set of which were revealed by the Qatari news TV Al-Jazeera on Sunday night, contain potentially damning revelations on the amount of land in annexed east Jerusalem that the Palestinians were willing to cede to Israel. "I don't know where Al-Jazeera got these secret things from, and there is nothing hidden from the Arab brothers," he added, insisting that Arab countries were constantly updated on developments through the Arab League. And the hundreds of documents, dating from 1999 onwards, also reveal that Israel gave the Palestinian leadership advance warning before it launched a devastating 22-day invasion of Gaza in December 2008. The revelations have infuriated the Palestinian leadership in the West Bank, already weakened by years of failure to win a peace deal with Israel and the deadly rout of its forces in Gaza in 2007 at the hands of Hamas. Chief Palestinian negotiator Saeb Erekat reacted furiously, accusing Al-Jazeera of a smear campaign and alleging the documents contained unspecified inaccuracies and falsehoods. Erekat said the leaked documents were taken "out of context and contain lies". "We don't have anything to hide, and I reiterate that Al-Jazeera's information is full of distortions and fraud," he said. Meanwhile, Abbas said that he had discussed with Mubarak an Arab proposal to win a resolution against illegal Israeli settlement from the UN Security Council. "The draft resolution is still a blue print. It could be set for vote then," Abbas said. He added that Arab foreign minister at a recent meeting in the Egyptian Red Sea resort city of Sharm el-Sheikh agreed to back this resolution. "Let's wait and see what will happen next".