Allied Intelligence — 2026-06-05

Cipher Brief Analysis Warns US Risks Losing Intelligence Partners as Colombia and UK Curtail Sharing

BLUFFormal suspension by another NATO or Five Eyes partner within 60 days is unlikely, but the real erosion is occurring through quiet downgrades in informal sharing that will surface only during a crisis.

The UK suspended intelligence sharing on Caribbean drug-trafficking vessels in November 2025, with British officials telling CNN that US military strikes killing 76 people since September violated international law 1. Colombian President Petro ordered a parallel halt the following day, directing security forces to cease communications with US agencies until the strikes stopped 2. An Atlantic Council analysis published June 4 placed those suspensions alongside Dutch military intelligence concerns from October 2025, the Ukraine intelligence suspension in March 2025, and the apparent absence of allied advance notice before Operation Epic Fury 3. The Cipher Brief noted June 4 that Denmark's Defense Intelligence Service described the US as a "potential security risk" in a 2025 report, citing Washington's growing use of economic leverage against allies 4.

Analysis
The UK and Colombia halts may be Caribbean-bounded protests tracking a single policy dispute rather than structural fractures in alliance architecture. Concern signals from the Netherlands, Denmark, and Canada carry secondary-source weight and have not translated into formal suspension in over seven months. A formal suspension by an additional NATO or Five Eyes partner within 60 days is unlikely. Allies manage intelligence disputes through informal adjustment rather than public declaration, and analytic confidence is moderate, bounded by the opacity of internal allied political calculations to open-source collection. The strategic exposure is gradual contraction of informal sharing that accumulates without announcement, becoming visible only when crisis coordination fails.

4 sources

Exclusive: UK suspends some intelligence sharing with US over boat strike concerns in major break - CNN
Colombia to suspend intelligence cooperation with U.S. over strikes on drug vessels - NBC News
By alienating its intelligence partners, the US risks losing more than trust - Atlantic Council
Why the U.S. Cannot Afford to Lose Intelligence Partners - The Cipher Brief