Russia, the US, and India are actively developing long-range strike capabilities for their attack helicopters. The Russian Mi-28NM Havoc has reportedly fired a cruise missile during operations in Ukraine. Concurrently, the US Marine Corps is enhancing the AH-1Z Viper's strike capability with a new modular system. India's Defence Research and Development Organisation has tested a new anti-ship missile from helicopters.

Source: Russia's Mi-28 fires a cruise missile: Attack helicopters are getting longer punch