The second phase of 'Exercise Malabar 2020' is underway at Western Indian Ocean. Navies of India, US, Australia and Japan began the second phase of the exercise on Tuesday. The exercise in northern Arabian Sea involves aircraft carriers, warships, submarines, etc. Major highlight of the four-day exercise is participation of INS Vikramaditya and USS Nimitz. First phase of Malabar exercise took place in Bay of Bengal from November 3 to 6. It featured several complex drills including anti-submarine, anti-air warfare operations. Australia has deployed its HMAS Ballarat, Japan has sent its leading destroyer JS Murasame. The mega exercise is taking place amid India and China border standoff in eastern Ladakh.