Ahmed al-Jabari and another top Hamas official Mohammed al-Hams were killed during a wave of raids in retaliation for rockets fired into southern Israel.
Former U.S. president Jimmy Carter warned during a visit to Jerusalem on Monday that the prospect of Israeli-Palestinian peace is "vanishing."
Sarsak was branded an "illegal combatant" by Israel's military judicial system, and was since imprisoned without any charges or trial.
Palestine became UNESCO's 195th member on Monday.
Israel approved a prisoner swap with Gaza's governing Hamas movement early this morning, prompting celebratory street parties in both Israel and Palestine.
Despite its mistakes and shortcomings the UN is a place where all member states have the chance to express their opinions - but this is not always the case.
An interview with Shaher Sa'ed, General Secretary of the Palestinian General Federation of Trade Unions, by Martine Hassoun.
The Obama administration has said it will veto the Palestinian membership application, arguing that negotiations are the only solution.
The president said the U.S. is opening "a new chapter in American diplomacy" centered on human rights and economic development. But the new policy has its own contradictions.
Leaders of 14 Palestinian political parties including Fatah and Hamas announced a unity agreement in Cairo on Wednesday.