Logistics Support Agreement

A Logistics Support Agreement (LSA) is a category of bilateral military arrangement that permits the armed forces of two states to access one another's bases, ports, and airfields for logistical purposes — such as refueling, spare parts, food, water, transportation, and minor repairs — typically on a reimbursable or barter basis. LSAs do not establish permanent foreign bases, grant basing rights in the traditional sense, or create mutual defense obligations; they are framed as transactional, "pay-as-you-go" instruments that lower the friction of joint exercises, humanitarian missions, and sustained operations far from home territory.

The United States is the most prolific user of this instrument. Its standard template is the Acquisition and Cross-Servicing Agreement (ACSA), authorized under 10 U.S.C. §§ 2341–2350, which the U.S. Department of Defense has concluded with more than 100 partners. A widely cited example is the Logistics Exchange Memorandum of Agreement (LEMOA) signed by the United States and India in August 2016, which adapted the ACSA framework to Indian political sensitivities about formal alliances. Japan has similar Acquisition and Cross-Servicing Agreements with the U.S., Australia, the U.K., France, Canada, India, and Germany, among others.

Key features typically include:

• Reciprocity: each side may request support and must be willing to provide it.
• Reimbursement: settlement in cash, replacement-in-kind, or equal-value exchange.
• Scope limits: weapons, ammunition, and certain sensitive items are usually excluded or require case-by-case approval.
• No basing rights: access is operational and event-driven, not territorial.

For diplomats and analysts, LSAs are significant because they signal strategic alignment short of an alliance. They are often paired with information-sharing pacts (such as the U.S.–India COMCASA and BECA) to build interoperability without triggering domestic debates over alliance commitments or foreign troop stationing.