What is Putin's motive behind launching new nuclear-capable missile?

Amidst rising global tensions regarding the ongoing war, Russia test-launched the Sarmat missile, a new nuclear-capable intercontinental ballistic weapon, on April 21. It was test-launched for the first time from Plesetsk in northwest Russia and hit targets in the Kamchatka peninsula, nearly 6,000 km (3,700 miles) away. It was test-launched for the first time from Plesetsk in northwest Russia and hit targets in the Kamchatka peninsula, nearly 6,000 km (3,700 miles) away.

"Sarmat is the most powerful missile with the longest range of destruction of targets in the world, which will significantly increase the combat power of our country's strategic nuclear forces," the Russian defence ministry said in a statement.