Name a problem plaguing the Arab world and Yemen is likely to be suffering from it. The country of 24 million on the southern half of the Arabian Peninsula is poor. It's home to the most dangerous offshoot of al-Qaeda that's still in business. During the Arab Spring, protests forced out the pro-Western kleptocratic president, but his successor is so weak that a force of rebels - who unlike al-Qaeda are Shiite Muslims or members of a branch of Shiite Islam - took over the presidential palace this week. Some observers of the chaos in Yemen say U.S. counterterrorism strategy there has at least failed to make things better and perhaps has even made things worse.