Striking back against Sen. Jeff Flake's, R-Ariz., skepticism of the sonic attacks on U.S. diplomats in Cuba, Sen. Marco Rubio, R-Fla., tweeted an unmitigated rebuttal Sunday, calling the attacks "documented fact" and the "#CastroRegime" knew about them.
Sen. Flake has been a vocal critic of President Donald Trump, something that might have led to his declining to seek re-election in 2018. He has also taken the Republican Party to task with his 2017 book "Conscience of a Conservative: A Rejection of Destructive Politics and a Return to Principle."
Flake has called for better relations with Cuba, something promoted by former President Barack Obama, but rolled back by President Trump and rejected by Sen. Rubio, a Cuban-American.