Russian administration announced on Russian Navy would be equipped with hypersonic nuclear strike weapons and underwater nuclear drones.  

• Tsirkon hypersonic cruise missile is designed to be carried on surface ships; it is under final phase of testing. 

Spike Missile: Spike is an Israeli fire-and-forget anti-tank guided missile and anti-personnel missile. 

• It was developed and designed by the Israeli company Rafael Advanced Defense Systems. 

Maareech torpedo defense system: It is an Advanced Torpedo Defence System (ATDS) that is capable of being fired from all frontline ships.  

• It has been designed and developed indigenously by DRDO.  
• It is capable of detecting, locating and neutralizing incoming torpedoes. 

Source: Indian Express & ForumIAS