The U.N. troops are in Congo to protect U.N. installations and personnel , and they can only fire in self defense and have been unable to stem the violence .
The troops - whose mandate is to protect U.N. installations and personnel - can only fire in self-defense and have been unable to stem the violence .
YEN COMPARED WITH LATE U.S LEVEL OF 137.64 THE SINGLE CURRENCY DROPPED TO 136.94.