NEW YORK--Five years after the Republicans got us into war against Iraq, Democrats want to double down on a war that's even more unjustifiable and unwinnable--the one against Afghanistan. By any measure, U.S. troops and their NATO allies are getting their asses kicked in the country that Reagan's CIA station chief for Pakistan called "the graveyard of empires." Afghanistan currently produces a record 93 percent of the world's opium. Suicide bombers are killing more U.S.-aligned troops than ever. Stonings are back. The Taliban and their allies, "defeated" in 2001, control most of the country--and may recapture the capital of Kabul...