AP - Alaska Gov. Sarah Palin surprised supporters Friday and announced she is resigning from office at the end of the month without explaining why she plans to step down — throwing into question whether she would seek a run for the White House in 2012.

AP - EDITOR'S NOTE: Iranian authorities have barred journalists for international news organizations from reporting on the streets and ordered them to stay in their offices. This report is based on the accounts of witnesses reached in Iran and official statements carried on Iranian media.

AP - NAWA, Afghanistan — U.S. Marines pushed deeper into Taliban areas of southern Afghanistan on Friday, seeking to cut insurgent supply lines and win over local elders on the second day of the biggest U.S. military operation here since the American-led invasion of 2001.