Airport security tightened ahead of Sharif's return

Pakistan stepped up airport security, banned rallies and detained opposition activists a day before former Prime Minister Nawaz Sharif’s planned return to challenge the military ruler who sent him into exile seven years ago.

Sharif plans to fly from London to Islamabad tomorrow and travel by motorcade to his home to campaign against President Gen. Pervez Musharraf, who ousted his elected government in a 1999 coup.