The convoy of Quartet Middle East envoy Tony Blair crosses the newly opened Jalama vehicle crossing, between the northern West Bank and Israel on November 10, 2009. Palestinian president Mahmud Abbas could resign, leading to a potential collapse of the Palestinian Authority, if US efforts to relaunch Middle East peace talks stay deadlocked, aides warn. Getty Images logo Getty Images 27 months ago

The convoy of Quartet Middle East envoy Tony Blair crosses the newly opened Jalama vehicle crossing, between the northern West Bank and Israel on November 10, 2009. Palestinian president Mahmud Abbas could resign, leading to a potential collapse of the Palestinian Authority, if US efforts to relaunch Middle East peace talks stay deadlocked, aides warn.