In the past decade, collaborative efforts around the world have led to five key, and intersecting, developments that have changed the way governments respond to maritime security challenges: expanded laws; interagency, or whole-of-government coordination within a country; cooperation among nations; maritime situational awareness (MSA); and the establishment of multinational training centers. Collectively, these new approaches form a single unifying thread for action and support a networked response to countering violence and illicit activity at sea. The developments examined in this Article provide key insights to collaboratively confront, with less traditional diplomatic actors, transnational criminal organizations and other security challenges in the future.