Just how durable is Iran's clerical regime, really? For years, Iran's ayatollahs have worked diligently to convince the world that their Islamic revolution is a popular—and permanent—enterprise.

Are the United States and its allies willing to pay the price, assume the risks, and support Ukrainian efforts not only to restore the borders of Feb. 23 but also retake Crimea? They may be. But let’s make sure there’s no misunderstanding on that score in Kyiv, Washington, or the capitals of our NATO allies.

As the Ukraine war drags on, the case for a new Russian leader becomes increasingly compelling.

We need to see Iran as the implacable adversary it is and then craft a broad strategic approach to it that makes sense.

At some point, Washington will indeed need to stand up a serious, transparent and bipartisan effort to counter the phenomenon of "fake news," but it is already clear that the Biden administration's new board isn't it.

The states of Central Asia and the Caucasus are clearly rattled by Russia’s aggression in Ukraine, and looking for ways to protect themselves against the same in the future.