Arizona senator and 2008 GOP presidential nominee John McCain is warning that Egyptian President Hosni Mubarak’s decision not to step down could touch off “a much more dangerous situation,” and he called for the Obama administration to tell Mubarak he must resign immediately. “The volatility of the situation was already very high,” McCain said on Fox News, “and I think it’s been ratcheted up dramatically. “I think the United States had better be more clear in our message to President Mubarak, that we are very clear in our message that he needs to step down,” McCain said. Asked by host...