An expired remnant of the Iran nuclear deal may help Russia rearm for another winter of missile attacks on Ukraine

• A UN Security Council resolution passed in the days after the 2015 Iran nuclear deal has expired.
• That could lead Russia to seek ballistic missiles from Iran as it steps up its attacks on Ukraine.
• Iran has yet to provide those missiles to Russia, but their defense relationship has been expanding.

The day before UN restrictions on Iran's import and export of ballistic missiles and armed drones expired on October 18, Russia declared it was no longer legally obligated to adhere to such restrictions.