Ohio Gov. John Kasich suggested Wednesday that if Russian planes were to violate a no-fly zone in Syria, he would order them to be shot down.
"If they flew in once, maybe I'd let them fly out, but they wouldn't fly out a second time," Kasich said on FM NewsTalk 97.1 radio.
A no-fly currently doesn't exist because the administration believes the costs outweigh the benefits of coordinating one.
Kasich is among several presidential candidates, including Hillary Clinton, who support a no-fly zone.
"I'd create a no-fly zone, is what I would do, and I would provide sanctuaries and have people that want to be there be protected. I think in that case you should probably get the Kurds to protect them," said Kasich on FM NewsTalk 97.1. "That's what I would do."
Kasich's comment comes a few weeks after Turkey shot down a Russian military jet after the Turkish government said Russia violated its airspace and did not obey repeated demands for them to exit.