In Belgium police have arrested some 500 activists taking part in a citizens nuclear weapons inspection at a NATO airbase. Organized by Greenpeace and the group Bombspotting, the protest called on NATO to become a nuclear free alliance and for the US to pull its nuclear weapons from all NATO countries. Greenpeace estimates 480 nuclear weapons are now housed in six European nations: Italy, Germany, Belgium, Britain, Turkey and the Netherlands. Activists from all six countries took part in the so-called citizen inspections.