However , during the 2017 ASEAN Summits all four former members rejoined in negotiations to revive the quadrilateral alliance . With Prime Minister Malcolm Turnbull of Australia , Prime Minister Shinzo Abe of Japan , Prime Minister Narendra Modi of India , and President Donald Trump of the United States agreeing in Manila to revive the security pact among tensions in the South China Sea caused primarily by China and its territorial ambitions
2017 ASEAN Summits
2017 ASEAN Summits
Quadrilateral Security Dialogue