WASHINGTON (AP) — In Egypt we trust.

In frantic diplomacy, the Obama administration helped seal a cease-fire that puts heavy responsibility on Egypt’s young Islamist government to ensure the end of Hamas rockets from the Gaza Strip. If Egypt delivers, the United States will have rediscovered the stalwart regional partner it has lacked since the autocratic Hosni Mubarak was overthrown in a popular revolt last year. If it fails, stability across the region will suffer.