Vice President Biden, in a somber assessment of the road ahead, predicted Sunday that American casualties will climb in Afghanistan as the Obama administration shifts military priorities in the battle against terrorism. The war in that country will get bloodier, he said, as the U.S. sends in additional troops to take back territory now controlled by Taliban militants, who were weakened when American forces invaded following the 9/11 terrorist attacks but have regained strength in recent years. "We've inherited a real mess," Biden said in an interview on CBS' Face the Nation, referring to decisions by the Bush administration and...