A new study looks at what has caused the aggressive spread of a 'superweed.'
The US condemned the coup but finds itself defending a president allied with leftist critics such as UN General Assembly president d'Escoto and Venezuela's Chávez.
Key challenges remain, including the discontent of former Sunni insurgents recruited by the US and credited with improving security.
Amid a huge display of national pride, some expressed concerns that violence could spike again.
The step is a blow to the military as it battles a Taliban leader in a neighboring province. The two Taliban movements could now join forces.
When Fallujah was more famous for a favored kebab joint than urban combat, Dan Murphy recalls, the Monitor's Chevy would turn toward the city like a meat-seeking missile whenever the team got within 60 miles.
Although both countries claim the military exercises are simply for practice, some wonder if the old dispute is again flaring.
Senate incumbent Coleman bows out after Minnesota's Supreme Court rules for the Democratic challenger. Democrats gain crucial 60th Senate seat.