Pentagon Probes Southern Spear Operation: Attacks on Drug Cartels Under Review

A Pentagon Inspector General (IG) review is evaluating the United States Southern Command’s Southern Spear operations, which have included lethal strikes against vessels suspected of drug trafficking in the Caribbean and the Pacific. Initiated after a series of attacks, the campaign has targeted nearly 60 ships and resulted in more than 190 fatalities, drawing sharp criticism from legal scholars, members of Congress, and military lawyers within the Pentagon. The May 11, 2026 letter from the Pentagon’s IG office states that the primary aim of the review is to determine whether Southcom followed the authorised targeting methods while conducting the operation. The project is described as an autonomous initiative based on ongoing assessments of the Defence Department’s operations. The IG spokesperson confirmed that the scope includes joint processes for targeting ships within Southcom’s area of responsibility as part of the administration’s drug trafficking campaign. The Trump administration has sought to justify the deadly strikes by arguing the United States is engaged in armed conflict with the drug cartels, treating those killed as enemy combatants in a secret Department of Justice legal opinion that contends the president is authorised to use deadly force against cartels considered a real threat to American citizens. However, incidents have sparked strong condemnation on Capitol Hill. To date, the Pentagon and US Southern Command have not commented further on the ongoing review. The inquiry will examine whether the use of deadly force against civilian targets suspected of involvement in drug trafficking can be legally justified under international law and US law of armed conflict. The scope of the review is focused on legal standards; broader security developments mentioned in other reports, including regional tensions with Iran and China, are not part of the current legal assessment.