LSN News › Sri Lanka

World · Sri Lanka Bureau

Leaked US cable cleared Sri Lankan Army of war crimes allegations

A declassified United States diplomatic cable from 2009 reportedly absolved the Sri Lankan military of crimes against humanity during the final stages of the civil conflict. The assessment, made by then-US Ambassador Clint Williamson, was based on confidential discussions held in Geneva.

LSN Sri Lanka · 11 November 2026

Leaked US cable cleared Sri Lankan Army of war crimes allegations

A confidential communication from July 2009, signed by then-Geneva-based United States Ambassador Clint Williamson and addressed to the State Department, reportedly concluded that the Sri Lankan Army was not culpable of crimes against humanity during the Vanni offensive. The assessment followed private discussions between the ambassador and Sri Lankan officials regarding military conduct during the conflict's concluding phase.

The diplomatic cable's contents, which have since become public, represented a significant statement of confidence in the Sri Lankan military's operational conduct during the final months of the 26-year civil war. The US assessment stood in contrast to subsequent investigations and reports by international human rights organizations and UN bodies examining allegations of atrocities committed during the 2009 military campaign.

The disclosure of the cable comes amid ongoing international scrutiny of accountability mechanisms related to the conflict. Various UN investigations and independent assessments have since raised questions about civilian casualties and military conduct during the Vanni operations, creating a divergence with the 2009 diplomatic assessment.

The classified communication reflects the complex diplomatic dynamics surrounding the conflict's conclusion and differing international perspectives on accountability for wartime conduct. The matter remains contentious within both domestic and international forums examining Sri Lanka's post-conflict reconciliation and justice processes.