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What happened, what almost happened, what could have happened in the U.K. over the weekend is a very serious situation. It's one that clearly involves the hands of a foreign actor. … I think it ties us to the reality here, and that is, we are dealing with elements in the world, and in the case of Iran, for example, who have openly threatened to attack American interests globally. … We're going to always take that very seriously. There will be repercussions for that, if it ever were to happen or even attempted.