For Hamas, a fear that capitulation will hurt their standing more than defiance. For Israel, it's a question of making good on public threats.
Despite hopes for a brief cease-fire while Egyptian Prime Minister Kandil visited the Gaza Strip, Israeli and Palestinian forces launched rockets and airstrikes Friday.
And there could well be more of it without them.
Israel assassinated a senior Hamas militant, Ahmed Jabari, today. How much further will the Gaza strikes go?
A sole joint committee between Israelis and Palestinians survives 17 years after the Oslo Accords: the one on water.
The Palestinians are seeking a global mandate for statehood at the United Nations. Israel warns the move would nullify the Oslo Accords.
Sudan's President Omar Hassan al-Bashir vowed today to retaliate against Israel for a recent alleged airstrike. The Monitor explains the background of the dispute.