Amos Gilad, director general of political-military affairs for Israel's defense ministry, in TIME:
The Sinai has never been easily policed by Egyptian authorities,and has been even more wide-open since the fall of President Hosni Mubarak. (When a hierarchy slackens, the periphery loosens the most.) But Gilad signaled that things are tightening up, saying the military government that succeeded Mubarak is working closely with Israel on Sinai.
"We have intensive dialogue with Egyptian authorities and they are doing their best to rise to the challenges," he said. Indeed Gilad was downright ebullient about the Supreme Council of the Armed Forces, referring admiringly to its "sophisticated use of power" and singling out Field Marshal Mohamad Hussain Tantawi, a close adviser to Mubarak. Israel's quite public worries about the course Egypt might take after Tahrir Square seemed a thing of the past, at least for now. "I must say I'm very much impressed by the stability of the Supreme Council," Gilad said. "I think they embody the best of Egypt."
Update: At around 18:00 today a large protest was taking place just outside the Israeli embassy, presumably because of the strikes in Gaza, so the army may be the one concerned about Israel!