According to BBC News, The US Government has given Belarus until the 16th of May 2008 to close its embassy and consulate in the USA. Belarus Diplomats have also been expelled from the USA as a response to the expulsion of US Diplomats from Belarus. Personally, the breaking of diplomatic relations between the two countries is not going to help the situation in Belarus. The same would apply to a blockade. In fact, Belarus has diplomatic relations with Cuba, Venezuela, Russia, Syria, and Iran [as well as other countries that used to belong to the USSR]. Attempts to contact the Belarus Embassy in Washington DC and Belarus Radio and TV were unsuccessful.

SOURCE:

BBC News: «US Expels Last Belarus Diplomat»

http://news.bbc.co.uk/2/hi/americas/7378046.stm