"Ever since World War II, wars have not been kind to American presidents.
The United States didn't achieve victory in Korea, Vietnam, Iraq or Afghanistan, and the costs of these wars in human lives and dollars were staggering.
They left bruises and tarnished legacies for the presidencies of Harry Truman, Lyndon Johnson, George W. Bush and Barack Obama.
At best, should the U.S. go to war against Iran, it will be able to muster the diplomatic and perhaps military support of four countries: the United Kingdom, Saudi Arabia, the United Arab Emirates and Israel.
Otherwise, the rest of the world has been completely put off by the Trump administration's unilateralism, belligerent nationalism, its decision to leave the nuclear agreement without a compelling cause and actions that are clearly aimed at provoking a military confrontation with Iran.
A war with Iran without significant international support, and perceived to be America's fault, would leave the U.S. isolated and bearing full responsibility.
More than likely, this kind of unilateralism would hand Russia and China — and Iran — an enormous propaganda advantage and weaken U.S. leverage in the days after."
https://www.npr.org/2019/06/20/734203649/opinion-why-war-with-iran-is-bad-for-trump-and-america"Ever since World War II, wars have not been ... (