"Suffice it to say that what happened, what almost happened, what could have happened in the UK over the weekend is a very serious situation," Rubio said.
US President Donald Trump criticized the UK's reaction to an alleged terrorist plot targeting a British air base used by the U.S. Army, stating that it was "surprised that the five suspects were released on bail Monday afternoon," CNN reports.
US Secretary of State Marco Rubio says it is clear that a "foreign actor" was involved in a suspected but thwarted terrorist plot against an air base in the UK.