Accepting an ongoing threat is also difficult. Mitigating the threat of an enemy rather than defeating the enemy outright goes against an impulse. But it is not something alien to American strategy. The United States is involved in the world, and it can't follow the founders' dictum of staying out of European struggles. But the United States has the option of following U.S. strategy in the two world wars. The United States was patient, accepted risks and shifted the burden to others, and when it acted, it acted out of necessity, with clearly defined goals matched by capabilities. Waiting until there is no choice but to go to war is not isolationism. Allowing others to carry the primary risk is not disengagement. Waging wars that are finite is not irresponsible.