Breaking the 'indispensable' rule
An old rule of office strategy: When you're performing a job that isn't necessary, you can't afford to take any time off. People will realize that the organization runs just fine without you.
The DC "government" seems to be making a similar mistake by closing down lots of embassies for a week to mobilize public opinion against Snowden and to displace Darrell Issa's perseverative idiocy about Benghazi. (We can instantly dismiss the fictional notion of "preventing" some supposed "attacks", because a real attack can occur just as easily when the target is closed.)
The move might backfire as people in those countries realize nothing has changed with the embassies closed. Fact is, embassies have been completely unnecessary since 1930, and even more wildly unnecessary now. When international communication via telephone and radio was established, ambassadors became superfluous. Since 1930, embassies have been nothing more than a locus for attacks by various foreigners.
Solution is perfectly simple: If we aren't there, they can't attack us. No embassy, no locus.