President Donald Trump’s decision to build an anti-immigrant wall will leave the United States alone and a “prisoner” of its own isolation, according to Pope Francis in his latest wide-ranging interview, this time with a Spanish journalist.

“He who raises a wall ends up a prisoner of the wall he erected,” the Pope said. “That’s a universal law in the social order and in the personal one. If you raise a wall between people, you end up a prisoner of that wall that you raised.”

“Yes, I defend my autonomy, yes,” Francis said, “but you’re left alone like a mushroom.”

Francis’s words came in a pre-recorded interview, which took place before he departed for an overnight trip to Morocco. Speaking to Spanish journalist Jordi Evole of La Sexta, Francis said countries that traffic in arms “have no right to talk about peace.”

“Are they fomenting war in another country and then want peace in their own?” Francis asked. “That theory will boomerang. Life charges them, one way or another. If you arm the war there, you will have [the war in] your house whether you want it or not.”

Asked about victims of clerical sexual abuse and whether they should go to the police to denounce a crime, Francis said “of course” and insisted such a standard was the outcome of a recent summit on abuse he convened.