Sadam shipped the WMDs to Mexico
I was at a conference at the Pentagon in 2000 where an expert said that one day terrorist would be able to develop bioweapons that target particular races or people.
So one day the Prime Minister of Japan or President of Bolivia could come down with a mysterious illness and die, and people will think it is the flu.
Also, a white supremest could invent a bioweapon that could threaten non-whites.