Indian naval ship INS Vikramaditya, foreground, and Japan's helicopter carrier Izumo participate in the trilateral exercises between India, Japan and US in the Bay of Bengal in 2017. AP Photo
Indian naval ship INS Vikramaditya, foreground, and Japan's helicopter carrier Izumo participate in the trilateral exercises between India, Japan and US in the Bay of Bengal in 2017. AP Photo

What is India's Indo-Pacific strategy?