President Obama warns against military "overreach" and urges "strategic patience" in a new national security strategy released Friday, though he still asserts that strong American leadership remains necessary to ensure peace in the face of disparate global threats. The United States, Obama argues, must recognize the limits of military force when it comes to international crises. "The United States will always defend our interests and uphold our commitments to allies and partners," the president writes in an introductory message. "But,...