After decades of mistrust and sometimes betrayal, Mexican and U.S. authorities are setting aside their differences to unite against a brutal drug trade. The two countries share intelligence, technology, military hardware and, perhaps most importantly, U.S. know-how to train and vet Mexican agents. (Sarah L. Voisin/The Washington Post)
Sunni insurgent group rebounds in strength and appears to be launching a concerted effort to cripple the Iraqi government as U.S. troops pull out, officials say.
Environment minister releases a non-governmental report that says there is no conclusive evidence that climate change has caused the melting of the Himalayan glaciers.