Trump and Rubio have criticized British counterterror police's handling of a possible plot targeting a U.K. air base used by U.S. forces, with Rubio calling it a "very serious" incident and alleging that it "clearly involved" a foreign actor, and the president suggesting it "might be" Iran.
https://www.cbsnews.com/news/trump-uk-raf-fairford-air-base-arrests-release-bail-rubio/