Kentucky Sen. Rand Paul is taking online digs at potential GOP presidential rival Sen. Marco Rubio of Florida over President Barack Obama's new Cuba policy.
In posts on Twitter, Paul on Friday accused Rubio of acting like an "isolationist" who wants to retreat to the nation's borders and "build a moat."
Paul wrote, "I reject this isolationism."
He was responding to Rubio's comments in an interview Thursday night with Fox News, in which Rubio said Paul had "no idea what he's talking about" when it comes to Cuba.
Paul says the U.S. embargo against Cuba hasn't worked and he's supportive of opening trade with Cuba.
Rubio has been critical of Obama's push to establish ties with Cuba, saying it amounts to appeasing the Castro regime.
