Pawlenty -- who has struggled to gain traction in the polls, and is expected to lag well behind Mitt Romney in second-quarter fundraising -- is trying to sell himself as the most hawkish of the primary field.

"American foreign policy is at its best when it is built on the principle vision that freedom, human rights, and democracy are the best prospect for peace, prosperity, and security in the world," he wrote in the email.

The subject line: "Exceptionalism."

Here's the full email:

Hello Reid - I believe America is exceptional and that our founding truths set us apart in this world. Unfortunately, President Obama has failed to understand the nature of our role. Now is not the time for America to stand on the sidelines or “lead from behind.” Now is the time for principled leadership that only the United States of America can provide. That’s why I’m running for president. And that’s why today I laid out my vision for a resolute American foreign policy that will promote American interests overseas and bolster our national security.  American foreign policy is at its best when it is built on the principle vision thatfreedom, human rights, and democracy are the best prospect for peace, prosperity, and security in the world. Will you join me to stop President Obama’s defeatist attitude and return America back to its rightful leadership role? Today, your investment of $10, $25, $50, or $100 will ensure I can continue to tell the hard truths and face our challenges with solutions, not rhetoric.  America is in dire need of leadership, not insolvency and it is only with your help we will begin to turn the tide. Please stand with me in this effort. Tim Pawlenty P.S. – There are 3 days until the final financial reporting deadline.  Your investment and commitment will send a clear message to President Obama: failure is not an option for our nation.  Please make a secure online donation through my website: www.TimPawlenty.com and join the thousands of Americans committed to taking our country back.