Sadly, yesterday was not only a day for Americans to remember those we lost in the terrorist attacks eleven years ago, but also a day of violence in the Middle East, violence directed towards Americans.
Our embassy in Egypt was overrun by protesters, who tore down our flag and ripped and burned it, then replaced it with their own banner. Even worse, in Libya similar protests resulted in our ambassador being killed.
Embassies are legally treated as the sovereign soil of the countries that operate them, so I can't see how yesterday's violence in Egypt and Libya was anything other than an act of war against the United States.