In Tuvalu, as part of the Falepili Union treaty between Australia and Tuvalu, which entered into force in August 2024, Australia committed to assist Tuvalu in response to a major natural disaster, health pandemic, or military aggression; Tuvalu pledged to mutually agree with Australia any partnership, arrangement, or engagement with any other State or entity on security and defense-related matters in Tuvalu

Tuvalu has a "shiprider" agreement with the US, which allows local maritime law enforcement officers to embark on US Coast Guard (USCG) and US Navy (USN) vessels, including to board and search vessels suspected of violating laws or regulations within Tuvalu's designated exclusive economic zone (EEZ) or on the high seas; "shiprider" agreements also enable USCG personnel and USN vessels with embarked USCG law enforcement personnel to work with host nations to protect critical regional resources (2025)