A choice of minefields for Obama

A choice of minefields for Obama

After a period of sustained and intense dithering, the US president has now found a framework to put the US on the right side of the Arab Spring. But having set out his hopes, will Mr Obama invest serious political capital to support them, asks Philip Stephens http://link.ft.com/r/KC2844/D476L2/IYD9ZO/3OTAGH/GKM09K/36/h?a1=2011&a2=5&a3=20