George W. Bush roasts Fidel Castro, a 'tyrant who left the earth last week

George W. Bush clearly doesn't have any positive feelings toward the late Cuban President Fidel Castro, referring to him during a speech Tuesday as a "tyrant who left the earth last week."

During remarks at the George W. Bush Presidential Center in Dallas, Texas, the former Republican president excoriated the leadership of North Korea for atrocities committed against their own people. He compared them to Castro, who died Friday at age 90.

"Like the North Korean leaders, he imprisoned his own people. Like the North Korean leaders, he ruined his country’s economy. And like the North Korean people, the Cuban people deserve better," Bush said.

The George W. Bush Institute, a non-partisan, public-policy arm of the presidential center, could be focusing on any number of issues around the globe, Bush said. But they've identified taking down totalitarian regimes, like Castro's was in Cuba and Kim Jong-un's in North Korea, as a priority.

"Of all the places, why should the Bush Center be thinking about North Korea?" Bush said. "There are several reasons. One is, North Korea is the remnant of the last century. It is one of the last Cold War conflicts. It’s the last gasp of totalitarianism. It’s the last fortress of a kind of tyranny that is beginning to leave the earth."