So, there was a change in Ambassadors in recent months? (The guy who called in was specifically referring to the embassy he just had served (within the past few months) where now they are unarmed, but he was when there.
The unarmed Marine guards may have been at the US Embassy in Egypt. It has a female Ambassador.
[It is difficult to keep up with which stories go with which embassies and countries. Another dozen countries are exploding since this morning. We may have only seen the beginning.]