Obama, never prone to hype, made clear in his speech that the ISIS jihadists don't yet pose as big a threat as al-Qaida did 13 years ago, on the eve of the World Trade Center attacks. But they are on a rampage, amassing fortunes, acquiring arsenals, led by competent commanders (many of them Saddam Hussein's former generals), playing on anti-Shiite (and anti-Western) sentiment among Sunni radicals. If they are allowed to take over Iraq and Syria, it's fair to ask if Jordan and Saudi Arabia might be next. They are also recruiting European jihadists, who have passports that let them travel across the continent and into the United States. Clearly, they do pose a threat. This cannot and should not be principally America's fight; but the fact is, America is the only country that can coordinate the coalition — provide the intelligence, logistics, and accurate air strikes — needed to win.