This bill, titled the "American-Hellenic-Israeli Eastern Mediterranean Counterterrorism and Maritime Security Partnership Act of 2025," seeks to significantly enhance counterterrorism and maritime security cooperation and training. It operates within the established "3+1" structure, which includes the United States, Israel, Greece, and the Republic of Cyprus. The legislation aims to strengthen these partnerships through expanded strategic engagement and increased support for joint exercises. To facilitate this enhanced cooperation, the bill establishes two new security-focused components: an Interparliamentary Eastern Mediterranean Security Cooperation Group and an Interexecutive Eastern Mediterranean Security Cooperation Group . These groups will meet at least twice annually with their respective counterparts from Israel, Greece, and Cyprus to discuss security issues. The policy also encourages increased participation in multilateral dialogues, intelligence sharing, and investments in security infrastructure. The legislation mandates the creation of two key training programs. The "CERBERUS" Counterterrorism Education for Readiness Building program will be established at the Cyprus Center for Land, Open-seas, and Port Security (C.Y.C.L.O.P.S.) to boost counterterrorism interoperability. Concurrently, the "TRIREME" Training and Readiness Initiative for Regional East-Mediterranean Maritime-Security Enforcement program will be developed at the Greek Souda Naval Base to enhance maritime security cooperation. Both programs are designed for ministry, agency, and headquarters-level organizations. A significant provision of the bill involves the elimination of scheduled termination and existing limitations regarding defense articles and security assistance for the Republic of Cyprus. This change aims to bolster Cyprus's defense capabilities and integration into regional security efforts. The bill authorizes substantial appropriations, including $5 million for new facilities at C.Y.C.L.O.P.S. and the Greek Souda Naval Base, along with annual funding for their general support and for the new training programs. Additionally, it allocates International Military Education and Training (IMET) assistance for Israel, Greece, and Cyprus to further enhance interoperability.