(Reuters.) – The Iranian government’s top official for military affairs warned that there will be a heavy price for those who are aggressors. It was following a report by the U.S. military about possible drills for military strikes to strike Iran’s nuclear sites if diplomacy is unsuccessful.

Nournews is affiliated to Iran’s highest security body. It stated that providing conditions for military commanders testing Iranian missiles against real targets would cost aggressors heavy money.

A top U.S. official said to Reuters Thursday that U.S.-Israeli defense chiefs are expected to talk about possible military exercises. These would be used to plan for a worse case scenario and destroy Iran’s nuclear infrastructures should diplomacy fail.