Front page WaPo 'teaser' summary:U.S. officials fear that the new Mexican government's changes could lead to an unofficial truce with cartel leaders.
For the past seven years, Mexico and the United States have put aside their tension-filled history on security matters to forge an unparalleled alliance against Mexico's drug cartels, one based on sharing sensitive intelligence, U.S. training and joint operational planning.
But now, much of that hard-earned cooperation may be in jeopardy.
Photo caption --
A soldier stands in a room full of barrels containing white and yellow powder after a seizure of a small ranch on the outskirts of Guadalajara, Mexico, in February 2012. According to the Mexican army, 15 tons of pure methamphetamine were seized at the ranch, an amount equivalent to half of all meth seizures worldwide in 2009.
Nice graphic at link, showing the turf of the various cartels.