Former Secretary of State Madeleine Albright charged Friday that Donald Trump is “erratic” and says “crazy things,” and that these qualities make her “nervous” when she thinks about how he would act as president of the United States.

“I’ve traveled abroad an awful lot, and our allies don’t think we’re weak,” she said on CNN Friday. “They don’t understand what he is saying and why he changes his mind, why he thinks that NATO doesn’t work, why he thinks that Saudi Arabia needs to have nuclear weapons, why he says the Japanese need to be nuclearized, any number of things that absolutely don’t make sense.”