• The Defense Department ordered 30 universities to review relationships with foreign entities.
• The universities were asked to address any risks to remain eligible for federal research dollars.
• All 30 universities ended or fully mitigated the foreign relationships.
• Most universities had already decided to end the relationships before receiving the agency's letters.

The Pentagon's actions may indicate a growing concern about the security risks associated with academic collaborations with foreign entities, particularly those from China. This could suggest a shift in the US government's approach to protecting sensitive research and technology, which may have implications for the future of international academic collaborations.