Islamabad, Safar 08, 1432, Jan 12, 2011, SPA -- U.S. Vice President Joe Biden held a meeting here today with Pakistani leaders to strengthen a vital alliance. Biden's one-day trip comes amid fresh reminders of American's challenges in the unstable, nuclear-armed Islamic country. Biden is expected to discuss both elements of U.S. strategy with Pakistani political and military leaders during his brief trip. --SPA 11:34 LOCAL TIME 08:34 GMT www.spa.gov.sa/854910