Wash it in the washer on gentle cycle or hand wash it. If it is newer, you may fry it in a dryer, but you might prefer to line dry it as well, especially if it is wool.
No, not at the moment. List of countries which have nukes: U.SUKPakistanIndiaJapanNorth KoreaRussiaIsarel Turkey [only till 2006]South AfricaFranceGermany [till 2003]