Israeli government spokesman Mark Regev said that by going to the U.N., the Palestinians violate "both the spirit and the word of signed agreements to solve issues through negotiations," which broke down four years ago.
But Israeli officials 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.
Regev, meanwhile, affirmed that Israel is willing to resume talks without preconditions.
U.N. diplomats said they will be listening closely to Abbas' speech to the General Assembly on Thursday afternoon before the vote to see if he makes an offer of fresh negotiations with no strings, which could lead to new talks. The Palestinians have been demanding a freeze on Israeli settlements as a precondition.
As a sign of the importance Israel attaches to the vote, Israeli Foreign Minister Avigdor Lieberman flew to New York and was scheduled to meet Secretary-General Ban Ki-moon before the vote. Israel's U.N. Ambassador Ron Prosor had been scheduled to speak in the General Assembly after Abbas, but it appears Lieberman may now make Israel's case opposing the resolution.
Unlike the Security Council, there are no vetoes in the General Assembly. The world body is dominated by countries sympathetic to the Palestinian cause and the resolution to raise its status from an observer to a nonmember observer state only requires a majority vote for approval. To date, 132 countries — over two-thirds of the U.N. member states — have recognized the state of Palestine.
The Palestinians have been courting Western nations, especially the Europeans, seen as critical to enhancing their international standing. A number have announced they will vote "yes" including France, Spain, Norway, Denmark and Switzerland. Those opposed or abstaining include the U.S., Israel, Germany, Canada, the Netherlands and Australia.