This past spring, Russia amassed 100,000 troops and a host of military equipment near the Ukrainian border in a transparent bid to threaten Kyiv; it seemed that an invasion might be imminent. Then, Russia withdrew most of its forces, claiming they had completed a training exercise, and the crisis was …

Recent weeks have seen an explosion of worry in the United States about China’s nuclear program. A Pentagon report released in early November warned that China is “accelerating the large-scale expansion of its nuclear forces” and building a larger, diversified, and more sophisticated nuclear arsenal. The report follows news that …

It is a mistake to view Iran’s regional aggression and hegemony as purely a result of violence and terrorism. Certainly, a major impetus of the Islamic Revolutionary Guard Corps (IRGC) and of its local militias in Iraq, Lebanon, Syria, Yemen, and elsewhere is the projection of violence of every sort. …