Obama has understood from the beginning that, in certain global situations, American power is severely limited. Despite the overwhelming US military arsenal, we cannot police the world as we wish -- unless we want to risk miring ourselves in new Iraqs and Afghanistans. Our best use of our power is to use our diplomatic skills to resolve disputes without resort to armed action. Obama is now trying to do this in Syria, Iran, North Korea, the Israeli-Palestinian conflict, and in Ukraine. Obama's pragmatism may sometimes seem too cautious or too "small ball" -- but, so far, over six years he has kept the peace, brought our troops back from Iraq and Afghanistan, and saved our country from wars in Syria, Iran and Ukraine. Not a terrible record after all.