Murals by Mexican artist Diego Rivera can be found all over the world, but some of his most unusual works are in Mexico City. There, a recently renovated fountain doubles as a municipal water pumping station, revealing Rivera's skills as both a sculptor and architect.

The same laid-back attitude and openness to outsiders that draws tourists to the peaceful country has also attracted Mexican cartels and their Colombia cocaine suppliers. Costa Rican President Laura Chinchilla says it tests Costa Rica's view of itself as a peaceful country in a violent region.

Let Iran off the hook or undermine the global economy? Slap sanctions on an Iranian energy company or provide Europe with an alternative to Russian gas? Washington policymaking is especially difficult when the aims conflict, and few cases illustrate that principle more clearly than the challenge of finding a way to punish Iran without hurting someone else.

The past five years of the drug war in Mexico have been marked by brutal violence, unsolved kidnappings and tens of thousands of deaths. Most of the violence has come from the drug gangs, but some of these atrocities have been committed by the Mexican military and police.

Kim Jong Un is playing a prominent role in his father's funeral and is already the object of fulsome praise from North Korea's official media.