The US’ absence at the recent East Asia Summit sent a powerful message to Southeast Asia, a region whose massive population, stellar economic growth, and strategic location would make it a crucial theater. The US may be able to recover, but it must act swiftly – and soon.

While ASEAN countries remain reliant on the United States for defense, they don’t want to be part of any U.S.-led encirclement of China because they fear their interests could be harmed and their neutrality challenged.

ASEAN’s best strategy for keeping China’s revisionist ambitions at bay and preserving maximum room for strategic maneuver is to engage the USA.

The negative consequences of U.S. involvement with Mekong countries are real but limited. The U.S. has the potential to continue to fuel tension over issues such as water resources in the region.

ASEAN realizes that geopolitical and geostrategic shifts taking place in the region will usher in both rewards and risks. But while being opportunistic, ASEAN knows the stakes are high should unbridled rivalry play out.

President Trump’s attendance at the recently concluded ASEAN Related Summits held in Manila suggests continued U.S. interest in a region touted as among the key engines of global economic growth and development. This is crucial as ASEAN celebrates its golden anniversary amidst fast changing regional dynamics.

U.S. President Donald Trump and Vietnamese President Tran Dai Quang underscored the importance of free and open access to South China Sea, in a joint statement

President Trump’s preoccupation with domestic issues and torpor in filling key foreign policy positions has left America without a coherent Asia-Pacific strategy.

As the supposed engine of regional integration, and bedrock of East Asian security architecture, the ASEAN has sought, with limited success, to mediate maritime disputes and avoid conflict in the region. But beyond concerns over the gradual loss of so-called ‘ASEAN centrality,’ Southeast Asian countries are also worried about sudden and destructive escalation in Sino-American tensions in the area, especially if the Trump administration makes a step too far in order to project toughness.

Divergence and competition between the two major players has intensified as both economies and their business communities want to seize the initiative in developing a more profound and mutually beneficial economic relationship with ASEAN. But there is still room for win-win-win results in this tri-cornered interaction.