The U.S. and Israel have tried to block the quest for U.N. recognition of Palestine, saying it's an attempt to bypass Israeli-Palestinian negotiations that broke down four years ago.
The U.S. deputy secretary of state, William Burns, met with Abbas in New York on Wednesday, asking Abbas again to drop the idea and promising that President Barack Obama would re-engage as a mediator in 2013, said Abbas aide Saeb Erekat. Abbas told Burns it was too late.
Secretary of State Hillary Rodham Clinton said U.N. recognition of an independent Palestine won't help to reach a lasting two-state peace agreement and stressed that the "path to a two-state solution that fulfills the aspirations of the Palestinian people is through Jerusalem and Ramallah, not New York."
Israel, meanwhile, appeared to back away from threats of drastic measures if the Palestinians get U.N. approval, with officials suggesting the government would take steps only if the Palestinians use their new status to act against Israel.
The Palestinians say they need U.N. recognition of a Palestinian state in the West Bank, Gaza and east Jerusalem, the lands Israel captured in 1967, to be able to resume negotiations with Israel.
Israeli Prime Minister Benjamin Netanyahu's predecessors accepted the 1967 lines as a basis for border talks, with modifications to be negotiated, including land swaps that would enable Israel to annex some of the largest Jewish settlements. Those talks did not produce a deal, and the sides remained apart on other key issues.
Netanyahu rejects the 1967 lines as starting point while pressing ahead with settlement construction, leaving Abbas little incentive to resume negotiations. Israel goes to elections in January, and polls indicate Netanyahu has a strong chance of winning.
Israel argues that Abbas is trying to dictate the outcome of border talks by going to the U.N., though the recognition request presented to the world body calls for a quick resumption of negotiations on all core issues of the conflict, including borders.
It's not clear if negotiations could resume even if Obama, freed from the constraints of his re-election campaign, can turn his attention to the Mideast conflict.
Abbas aides have given conflicting accounts of whether Abbas, once armed with global backing for the 1967 borders, will return to negotiations without an Israeli settlement freeze. About half a million Israelis have settled on war-won land.
A construction stop is unlikely, even more so after hawks in Netanyahu's Likud Party scored major gains in primaries this week.
Israel has said it is willing to resume talks without preconditions.