Policymakers are still playing catch-up with recent advances in narco submarine technology.

What does last week’s arrest mean in the wider context of Mexico’s changing drug war?

The Mexican state is fighting powerful and multiple atypical insurgencies, armed with virtually unlimited access to firearms, including anti-aircraft batteries, and funded by an export trade in illegal narcotics worth billions of dollars.

Examining how Mexico’s recent elections will impact the country’s bloody and long-running war on the cartels.

Across Latin America, governments are hailing security gains against organized criminal groups. Yet in spite of more arrests, criminal networks are stronger and criminality just as pervasive, suggesting that another reality lies behind the numbers.

The international effort to combat the illicit trade in small arms and light weapons faces numerous challenges, the most notable of which is globalisation itself.