CIUDAD JUAREZ, MEXICO -- Senior Mexican officials have begun a sweeping review of the military's two-year occupation of this dangerous border city, concluding that the U.S.-backed deployment of thousands of soldiers against drug traffickers has failed to control the violence and crime, according to officials in both countries. The multi-agency review, which has not been made public, represents a "serious reassessment" of President Felipe Calderón's anti-narcotics strategy and reflects growing alarm that Juarez, across from El Paso, has descended into lawlessness, U.S. officials familiar with the process said. The war on Mexico's powerful drug cartels has been the defining policy...