What disagreements existed within policymaking circles were largely over the tactics and strategies to be used and not the ends of US foreign policy. Such disputes were possible in part because in his article Kennan did not specify the means of containment. He would later become a critic of containment, arguing that his ideas had been misinterpreted and misapplied. Kennan specifically objected to the heavy reliance on military force and the perceived need to practice containment everywhere and anywhere that communist expansion was encountered.