Egypt has opened its side of the Gaza border to allow activists to send another relief vessel.

President Barack Obama's major speech in Cairo, Egypt lived up to the hype; not that, as the president said at the city's Al-Azhar University, "a single speech can eradicate years of mistrust," but that Obama is uniquely comfortable speaking plainly in the most uncomfortable of situations. And here—in a Muslim country not yet fully democratic, before an audience of skeptical, but cosmopolitan Egyptians and a noisome public at home—was an uncomfortable situation....