Omar Suleiman sat down with the Muslim Brotherhood for talks yesterday. The MB had initially said it would do no such thing until Mubarak was out.
The protesters in Tahrir square are authentically ecumenical. Today, some Muslims joined in celebrating the Coptic Christian mass in a display of solidarity. But when it comes time to actually negotiate, the parties involved are “the Muslim brotherhood, and other opposition groups.” That is to say, the protesters may well be good liberal democrats. But the group most well positioned to actually politically oppose Mubarak is Islamist.