Pakistan tightens security after mosque siege

Thousands of troops rolled across northwest Pakistan Friday, a day after President Gen. Pervez Musharraf vowed to follow the storming of Islamabad's Red Mosque by eliminating extremism from "every corner" of the country. Anti-Musharraf protesters took to the streets of every major city to blame the US-backed leader for the violence at the mosque. Some chanted slogans in favor of al-Qaida leader Osama bin Laden.