After rapid advances, the Yemeni rebel group is fortifying its positions along the vital maritime chokepoint, while intensifying pressure in southwestern Taiz, northern Lahj, and Marib
[caption id="attachment_55232461" align="aligncenter" width="620" caption="G-8 leaders chat at a summit in 2010, but are such gatherings increasingly irrelevant?"][/caption]The future of the…