AIR SUPERIORITY: US dismisses Russia’s ban on military aircraft over Syria safe zones.

A State Department official on Friday said that the Russian proposal calling to bar U.S. military aircrafts from flying over designated safe zones cannot “limit” the U.S.’s mission against ISIS in the country in any way.

“The coalition will continue to strike ISIS targets in Syria,” the official told The Wall Street Journal. “The campaign to defeat ISIS will continue at the same relentless pace as it is proceeding now.”

A deal hammered out by Russia, Turkey and Iran to set up “de-escalation zones” in mostly opposition-held parts of Syria went into effect Saturday.

What it comes down to is, the U.S. has the ability to enforce its will over Syrian airspace, and Russia, Iran, and Turkey don’t.