Group 1 - The core viewpoint of the article highlights the strategic collaboration among the US, Japan, India, and Australia under the "Quad" mechanism, which is perceived as a response to China's maritime activities and an effort to maintain regional dominance [1][3][4] - The "Quad" foreign ministers' meeting reaffirmed the commitment to a free and open Indo-Pacific, emphasizing the importance of sovereignty, maritime security, and resilient supply chains among the member countries [3][4] - The joint "onboard observer mission" initiated by the coast guards of the four nations aims to enhance interoperability and maritime security, with plans for further operations in the Indo-Pacific region in the coming years [3][4] Group 2 - The "Quad" mechanism is seen as a tool for the US to assert its geopolitical interests, with member countries leveraging this collaboration to highlight their significance in the Asia-Pacific region while promoting the narrative of a "China threat" [3][5] - Recent activities, including the deployment of the US Coast Guard patrol vessel "Stratton" and the participation of coast guard personnel from Japan, Australia, and India, indicate a coordinated effort to address illegal fishing and enhance maritime enforcement in the region [4][5] - The article notes existing trade tensions and bilateral disputes among the Quad members, which could cast uncertainty on the future effectiveness and cohesion of the "Quad" mechanism [5]