] Pakistan has dramatically stepped up its assistance to ] the U.S.-led campaign to capture Osama bin Laden, ] deploying thousands of soldiers into its lawless ] northwestern frontier, pressuring tribal elders, and ] allowing American soldiers from neighboring Afghanistan ] to make forays across the border, senior Pentagon and ] Pakistani officials say. It begins. Mercury News | 02/21/2004 | Pakistan turns up the heat on the hunt for bin Laden |