On Iraq, McCain understands the big picture:
"The next U.S. president must be ready to lead, ready to show America and the world that this country's best days are yet to come, and ready to establish an enduring peace based on freedom that can safeguard American security for the rest of the twenty-first century. I am ready." (An Enduring Peace Built on Freedom By John McCain)
Yes, he is ready to lead and leadership matters at a time like this. This is no time for a poll reader such as Hillary Clinton:
"When the Iraq war was going well and was popular, Clinton was proud of her vote, saying in late 2003, "I believe that was the right vote."
In 2005 she redoubled her commitment: "There can be no doubt that it is not in America's interests for the Iraqi government, the experiment in freedom and democracy, to fail."