Why is co-operation needed among nations?

Atraffic cop has pulled over a speeder, only to discover that he has stopped a close friend. the police officer is torn, because his professional obligations demand that he punish the speeder, but his personal obligations suggest that he should give a friend a break. what is this called?

What is the name of the large desert that runs across north africa

This is the u.s. naval base attacked by the japanese in 1941 that brought the u.s. into ww ii.