Iran shot down a U.S. drone, is military action looming?

Iran shot down a U.S. Navy drone today. Iranians claim the drone flew over Iran. The U.S. denies this, and says it was flying in international air space. On Twitter, Iran’s foreign minister accused the US of lying, and vowed to take this “new aggression” to the United Nations. It’s been a dizzying series of tit-for-tat exchanges between the Trump administration and Iran over the last few months. The international community is unsure of what comes next.