The entire stock of shells and bombs was literally crushed by bulldozers in 2004 . Nations have been monitoring missiles , mustard gas . The UN has a lot of experience with chemical weapons and they are very good at detecting them. About 10 tons of mustard gas known to remain .
Nations have been monitoring missiles , mustard gas . The UN has a lot of experience with chemical weapons and they are very good at detecting them. About 10 tons of mustard gas known to remain .