U.S. Marines with HMH-461 and 2nd DSB execute external lifts

09/01/2025

SLD BOOKSHOP

The Second Line of Defense team provides high quality publications with regard to key global strategic developments. You can purchase these on a number of booksellers such as Amazon, Barnes & Noble and Kobo.

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The Age of Chaos: Democratic Strategy, Kill Web Warfare, and Authoritarian Power

03/23/2026 We are not living through a passing disturbance. We are living through the Age of Chaos — a systemic transition from one global order to another whose destination remains fiercely… Read more »

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