Undersea Security: AUKUS partners (US, UK, Australia) agreed to develop unmanned undersea vehicles under “Pillar Two,” with delivery starting next year, as China warns it could spark an arms race. Regional Defence Diplomacy: At Singapore’s Shangri-La Dialogue, US Defence Secretary Pete Hegseth reassured Pacific allies while softening China rhetoric and avoiding Taiwan in his remarks; China’s delegation also pushed back on “hegemonism” and “bloc confrontation.” Maritime Cooperation: Japan and South Korea will resume a joint search-and-rescue drill on June 7 after about nine years, reflecting improving ties. Critical Underwater Infrastructure: Malaysia, Singapore and 15 other countries launched GUIDE—guiding principles for the defence of critical underwater infrastructure—aimed at protecting cables and energy/telecom links. Climate Risk Finance: Lao PDR launched Southeast Asia’s first anticipatory drought insurance pilot with SEADRIF and FAO, using early warning data to trigger payouts before drought hits. Pacific Climate Alarm: Samoa PM Fiame Naomi Mata’afa urged urgent global action ahead of the IPCC’s final synthesis report, warning low-lying communities face sovereignty loss. UN Security Council Bid: The Philippines entered the final phase of its UNSC non-permanent seat campaign ahead of June 3 elections, stressing practical multilateralism. Sports & Society: Meghalaya inaugurated an indoor hall and signed the host-state agreement for the 39th National Games 2027.