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The foreign ministers of the U.S., the U.K., Australia, Canada and 23 other countries, many in Europe, have released a joint statement condemning hostile activities by Iran on foreign soil.

The statement came on the heels of British Prime Minister Andy Burnham saying a recent security incident at England’s RAF Fairford air base, which was until recently home to U.S. long-range bombers, was “almost certainly directed” by Iran’s Revolutionary Guard.

The countries said Monday that they “condemn in the strongest terms Iran’s use of violent attacks, including the acts of lethal plotting, arson, sabotage, cyber-attacks, and other hybrid activities against us and our partners.”

Linking the RAF Fairford incident to other recent attacks in Europe “targeting Jewish communities, Iranian journalists, and U.S. interests,” the countries said: “Any attempt by Iran to threaten, silence, intimidate, harass, harm, or coerce people on our territories through proxies or any other means is unacceptable.”

“Anyone who conducts hostile activities on behalf of Iran, or any other state, should know that we will take action to identify, investigate, disrupt, and prosecute these acts.”