Senate Majority Leader Mitch McConnell fired back at Steve Bannon on Sunday for wanting to ruin Republican incumbents.

In an interview with Fox New, McConnell said Bannon and his allies are “specialists at nominating people who lose.” The former White House strategist aims to unseat as many as six GOP Senate incumbents running for re-election.

Last week, Bannon endorsed former Arizona State Senator Kelli Ward, who is running against Senator Jeff Flake. Ward challenged Senator John McCain during the State’s primary elections last year. However, McCain easily defeated Ward and two other Republican challengers.

At Ward’s campaign kick-off, Bannon vowed to bring his uprising against the GOP establishment from Alabama to Arizona. He supported former Judge Roy Moore, who won Alabama’s primary contest against Sen. Luther Strange. McConnell supported Strange.

During the recent conservative Value voter’s summit, Bannon reiterated his threat against GOP incumbents. He even compared McConnell to “Julius Caesar." He added that he is receiving request to find a “Brutus,” one of the conspirators in the assassination of the Roman emperor.

Additionally, the former White House strategist said, "Yeah, Mitch, the donors are not happy. They've all left you. We've cut your oxygen off, Mitch, OK?"

McConnell says his detractors have been defeated repeatedly

On Sunday, Fox News Dana Perino asked McConnell’s reaction on Bannon considering him as his number one enemy. The Senate Majority Leader said Bannon and his allies didn’t help the GOP in the previous elections.

According to McConnell, “With regard to the elements you are referring to, they’ve been out there for a number of years. They cost us five Senate seats in 2010 and 2012. They were able to nominate people who could not win in November."  Additionally, he pointed out that those people were defeated in 2014 and again in 2016.

Furthermore, McConnell explained, “And that's what this inter-party skirmish is about. Our goal is to nominate people in the primaries next year who can actually win. The people who win will be the ones who enact the president's agenda

Moreover, he emphasized, "Look, this is not about personalities. This is about achievement. And in order to make policy, you have to win the election.”