U.S. Sen. Rand Paul, who is expected to announce a run for president in the next couple of weeks, is taking aim at presumptive Democratic nominee Hillary Rodham Clinton, raising concerns about money her foundation accepted from “unsavory governments” and the controversy surrounding the private email account she used while Secretary of State.

“I’ve been offended by the fact that she said she didn’t want to carry two cell phones for convenience,” the Kentucky Republican said of Clinton’s claim that she kept a private email address because it would be easier on her. “First thing — we ought to inform her than in the 21st century you can put two email accounts on one phone … It is insulting that she says for convenience sake that she may have endangered our national security.”

Paul also blasted Clinton for accepting money donated to The Clinton Foundation from countries that “not only don’t promote women’s rights but abuse women’s rights” — a topic that political analysts expect will be a focal point of Clinton’s campaign.

“There’s a lot of talk now about the money that she took for her foundation from foreign countries. Apparently they promised not to take it while she was secretary of state but they kept taking it and this is millions and millions of dollars taken from unsavory governments,” Paul said during an appearance this morning on Boston Herald Radio’s “Morning Meeting” program. “There seems to be a circle of cash going around from state department, countries and companies and then back to Bill Clinton and back to Hillary — there’s just a circle of this money that there’s going to be a lot of questions that come forward and I think there’s going to continue to be a lot of discussion on this.”

Paul told hosts Jaclyn Cashman and Hillary Chabot that recent polls pitting potential Republican nominees against Clinton give him the best chance at defeating her in the general election.

“One of the important polls that’s been coming out is pitting various potential candidates against Hillary Clinton and we’ve been pleased of all the people thinking about running we actually do better against Hillary Clinton than any other candidate,” Paul said.

Paul also slammed current Secretary of State and former Bay State Sen. John Kerry.

When asked what grade he would give Kerry, Paul said, “I would say ‘F’ and I’m trying to be generous.”

“I really haven’t agreed with much of anything he or the president have done and if you want a good adjective I’d say feckless, lacking in direction, misguided, unconstitutional, frequently illegal,” Paul said. “When you look at all of the things that have come out of this administration it really just doesn’t seem like there’s a clear-cut direction as to where they’re leading the country.”