While the United States had 21 warships enforcing a naval blockade in the Strait of Hormuz, Iran's foreign minister flew to St. Petersburg and sat down with Vladimir Putin for 90 minutes. Russia's defense minister met Iran's deputy defense minister the same day. Russia had already supplied military equipment to Iran throughout the war. Russia vetoed the UN resolution that would have protected international shipping. Russian ships were among the few permitted through the Iranian-controlled strait without restriction or toll. And the closure of the Strait of Hormuz, which pushed oil prices above $119 a barrel, generated hundreds of millions of dollars per day in additional revenue for Russia's war economy in Ukraine. Russia did not fire a single shot in this conflict. It did not need to. What Russia did to the United States in the Strait of Hormuz was more calculated, more consequential, and more dangerous than anything involving a weapon.