Russia builds massive nuclear submarine to launch one of the most extreme weapons ever devised (xataka.com)

• Khabarovsk-class: 135m specialized submarine for Poseidon.
• Poseidon: autonomous nuclear torpedo with intercontinental reach.
• Forces NATO to enhance anti-submarine warfare and shift resources.

"Russia has completed the Khabarovsk-class submarine, designed solely to carry and launch the Poseidon nuclear torpedo. The 135-meter vessel can hold up to six of these autonomous, nuclear-powered torpedoes with intercontinental range. The design sacrifices conventional capabilities to prioritize this strategic weapon meant to penetrate Western defenses. While some claims about Poseidon may be exaggerated, the submarine forces NATO to allocate resources to counter autonomous underwater threats, giving Russia a strategic advantage."