A Hamas spokesman on Friday said Israel had picked the "most extremist and most dangerous" to lead the country, only hours after Likud leader Benjamin Netanyahu accepted a mandate to form its next government.

The choice of Netanyahu "does not herald a period or peace or stability in the region," AFP quoted Hamas spokesman Fawzi Barhum as saying.

Another Hamas official on Friday branded both Netanyahu and his rival, Kadima leader Tzipi Livni, as enemies of the Palestinians.

"Hamas doesn't differentiate between Netanyahu and Livni, they are all hostile toward the Palestinian people and they are all terrorists," Hamas official Ismail Radwan told Al-Jazeera. "Tasking Netanyahu with forming the government is a lesson for those who had hoped for peace."

Before last weeks election, Netanyahu pledged to topple Hamas from power in Gaza if elected prime minister.

A spokesman for Palestinian Authority President Mahmoud Abbas, meanwhile, said on Friday that the PA will not deal with the new Israeli government if it is not committed to peace.

"We will not deal with the Israeli government unless it accepts a two-state solution and accepts to halt settlements and to respect past accords," AFP quoted Abbas spokesman Nabil Abu Rudeina as saying.

Palestinian negotiator Saeb Erekat said any future Israeli government that doesn't accept the establishment of a Palestinian state and continues settlement building will not be a partner.

"We will not be in the negotiations for the sake of negotiations," Erekat said.