[link|http://www.wsws.org/articles/2002/dec2002/scud-d14.shtml|World Socialist Web Site]
An interesting story of why the Scud missles where seized, and why they where released.
The core of the story is that the White House didn't think Yemen would claim the illegally shipped missles, letting the White House pin the blaim on Iraq. Thus giving them a clear reason for declaring war.
Jay