This week Britain led another international attempt to help Somalia, a dysfunctional state plagued by piracy and terrorism. Nations must learn from the past that trying to build up a central government in Somalia won't work. It's the regions and sub-clans that need bolstering.
Syria's war is going to end with a defeat for Bashar al-Assad or the uprising, but not because of events at the UN or Arab League.
It's too early to talk of her legacy, or to grade the Obama administration's foreign policy, but four years of repairing relationships and defending US interests have taken a physical toll.