2. When I advocate a non-interventionist foreign policy, the most common counterexample people cite back is the disastrous British non-interventionist foreign policy of the late 1930s. Brown reminds us that the British foreign policy was interventionist. He discusses Hitler's move of 30,000 German troops into the demilitarized Rhineland, "in open defiance of both the Treaty of Versailles and the Locarno Pact to which Germany was a signatory." He points out that Hitler was not ready for war and was waiting tensely to see if the French and British would react.
Brown writes: He needn't have worried. In England, foreign secretary Anthony Eden said he "deeply regretted" the news, and then set about pressuring the French not to overreact.
In other words, the British government did intervene--with the French.