Democrat Graham Platner faces calls to drop out of Maine's Senate race after sexual assault allegations surfaced; NATO leaders gather in Turkey as Trump presses allies on defense spending while seeking reassurance of U.S. commitment; U.S. men's World Cup run ends with 4-1 loss to Belgium in round of 16. Graham Platner denies rape allegations from a former girlfriend but is reassessing his Senate campaign amid pressure from Democratic leadership, including Senate Minority Leader Chuck Schumer threatening to withhold funding.