Yesterday, the Russian Navy released a video of K-560 Severodvinsk—sailing in the Barents Sea—launching Kalibr cruise missiles toward a target in the Chizh test site in the Arkhangelsk region 600 kilometers away. The video highlights the Russian Navy’s capability to perform long-range strike missions across the globe—something that has largely been the sole purview of Western navies armed with Tomahawk cruise missiles since the end of the Cold War.

“The crew executed a combat exercise from an underwater position in one of the training grounds of the Northern Fleet in the Barents Sea,” reads a statement from the Russian Ministry of Defense (MOD).

 “The missile was launched at the Chizh test site in the Arkhangelsk region. The distance from the start line to the target position was about 600 kilometers.”

Rusya Deniz Kuvvetleri, K-560 Severodvinsk nükleer saldırı denizaltıları ile Barents Denizi'nde cruise füzesi atışları gerçekleştirdi.

— Mr Department (@MrDepartment) August 18, 2017

According to the Russian MOD, the weapon hit its target and met of their technical parameters for the live fire test. But as recent Russian operations in Syria have shown, hitting a target only 600km away only exploits a fraction of the Kalibr’s capability. Russian surface warships based in the Caspian Sea have engaged targets at ranges of roughly 1800km—or about 1000 nautical miles—against various targets in Syria. The Kalibr is thought to have a maximum range of roughly 2,600km or about 1,400 nautical miles.

The Kalibr affords Russian surface warships the ability to engage targets ashore at long ranges. Indeed, the Russian Navy can strike at large parts of northern and western Europe from its surface warships and conventional submarines.

“Overall, the Northern, the Baltic, the Black Sea, and the Caspian Fleets can hold at risk wide swaths of territory in Europe and the Middle East, perhaps reaching as far as parts of the Persian Gulf region,” Nikolai Sokov, a former Soviet/Russian arms control negotiator and senior fellow at the James Martin Center for Nonproliferation Studies wrote.

“Even assuming the range of conventional Kalibrs at 1,500 km, the reach is truly global. The vast majority of countries within that range do not have nuclear weapons of their own or U.S. nuclear weapons in their territories. Thus, Russia cannot threaten them with nuclear SLCMs, but conventional SLCMs are a whole different ball game.”

Indeed, the Kalibr comes into its own when deployed onboard Russia’s fleet of nuclear-powered attack submarines. Given the speed, stealth and global reach of Russian nuclear-powered submarines, Moscow can use SSNs equipped with Kalibr cruise missiles to strike at targets around the globe with conventional or—in the case of World War III—a nuclear warhead. As a recent graphic from the Center for Strategic and International Studies shows, a Kalibr-equipped Russian SSN or SSGN could strike at targets deep inland with conventional or nuclear warheads while sitting more than 2000km or just over a 1000 nautical miles offshore.

Particularly dangerous are Severodvinsk—by far the most capable Russian attack submarine built to date—and her soon to be commissioned Project 885M Yasen-M-class sister ships, which are far quieter than any previous Russian or Soviet submarine.

“The Yasen-class is perhaps Russia's best example of a multipurpose submarine, able to fulfill a number of missions,” Michael Kofman, a research scientist specializing in Russian military affairs at the Center for Naval Analyses, told The National Interest.

“Integration with Kalibr anti-ship or land attack missiles is representative of the overall trend of 'kalibrzation' across the Russian Navy.”

The Russians are planning to build a total of six Project 885M attack submarines, which have many improvements over Severodvinsk. The first improved Project 885M boat, called Kazan, is expected to be commissioned in 2018. However, other older, modernized, but still capable nuclear attack submarines are also starting to receive Kalibr missiles. Eventually, most Russian vessels will carry the Kalibr.

What all of that means is that the United States no longer has the monopoly on long-range precision strike. Moreover, while the United States has always counted on the Atlantic and the Pacific oceans to forestall a direct attack on the American soil, the introduction of weapons like the Kalibr means that other great powers can now hold targets within the American homeland at risk with both conventional and nuclear weapons. For Washington, it’s a threat that the United States has not faced since the 1991 demise of the Soviet Union.

More from National Interest: