Explanation:

• India successfully test-fired indigenously-developed anti-tank guided missile systems 'Helina' and 'Dhruvastra'.
• These missiles are one of the most advanced anti-tank weapons in the world. 
• The missiles were test-fired at Pokhran deserts in Rajasthan.
• The system has the all-weather day-and-night capability and can defeat battle tanks with conventional armour as well as with explosive reactive armour.