Mitt Romney said Sunday that his conviction and problem-solving skills would make him a successful foreign policy president in the mold of Ronald Reagan, who like Romney lacked experience in international diplomacy.

“I would say that foreign policy is a place where intelligence, resolve, clarity and confidence in cause is of extraordinary importance,” Romney said in an interview with CBS News before delivering a foreign policy address in Jerusalem.

“Ronald Reagan was one of our great foreign policy presidents,’’ Romney said. “He did not come from the Senate. He did not come from the foreign policy world. He was a governor. But his resolve, his clarity of purpose, his intelligence, his capacity to deal with complex issues and solve tough problems served him extremely well. And if I were elected president, I hope I could rely on those same qualities.”

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Romney said he believes that when voters look at him, “they will see a person who’s dealt with a number of challenging and extremely difficult circumstances and been able to successfully navigate through those and create greater strength and greater opportunity.

I believe that people recognize that I am someone who has confidence in America’s cause, that I am clear in the purpose that America represents, and that I would exercise might, if it were necessary, with resolve.”

But the presumptive Republican presidential nominee offered few insights into the principles that would guide his decision making.

After Romney suggested he would consider military intervention in Iran, to block nuclear development, interviewer Jan Crawford asked “what would the Romney doctrine be, then, when you’re trying to decide whether to intervene abroad?”

“Well, my doctrine is as I’ve described,” Romney replied, “which is confidence in our cause, clarity in our purpose and resolve in our might.”

Florida Representative Debbie Wasserman Schultz, chairwoman of the Democratic National Committee, responded quickly by blasting Romney for not elaborating on his strategy.

“If Mitt Romney believes that it’s time to go to war to address Iran’s quest to achieve a nuclear vision, then he should say it,” Wasserman Schultz said on CBS’s “Face the Nation.”

“In fact, if Mitt Romney has any foreign policy positions at all—which he has seemed to not indicate he has—then he should say them,’’ she said. “That’s the very least that the American voters can expect, that when you’re running for president, you would outline what you would do and what you would do differently from the president of the United States.”