Newly released documents show Palestinian negotiators have agreed to give up large tracts of West Bank land in peace talks with the Israeli government. The disclosure is among many contained in what is being called the ”Palestine Papers” — over 1,700 files from inside Israeli-Palestinian negotiations dating from 1999 to 2010. The news network Al Jazeera began publishing details of the documents on Sunday. Minutes from a 2008 meeting indicate Palestinian negotiators offered to allow Israel’s annexation of almost all of East Jerusalem, without receiving any concessions in return. Al Jazeera says forthcoming documents will reveal new details about compromises the Palestinian Authority was prepared to make on refugees and the right of return, as well as on the PA’s security cooperation with Israel and its correspondence on the U.N. inquiry into the late-2008 attack on the Gaza Strip. Palestinian Authority officials have challenged the documents’ veracity. Chief negotiator Saeb Erekat called their contents “a pack of lies.”