But he stopped well short of promising he’d undo the deal and basically dismissed other Republicans who’ve done so as panderers, telling reporters that it’s unlikely he — any president, really — would take such a drastic step immediately upon taking office.

“At 12:01 on January, whatever it is, 19th [2017], I will not probably have a confirmed secretary of state; I will not have a confirmed national security team in place; I will not have consulted with our allies. I will not have had the intelligence briefings to have made a decision,” Bush said. “If you’re running for president, I think it’s important to be mature and thoughtful about this.”

That comment marked a subtle shot across the bow at Scott Walker, who said in his announcement speech Monday, “We need to terminate the bad deal with Iran on the very first day in office.”