The Indo-Pacific region is not only a cauldron of cultures, histories, resources and opportunities but also a theatre of complexities and challenges, Chief of Army Staff (COAS) General Manoj Pande said during Indo-Pacific Armies Chiefs Conference (IPACC) that culminated here on Wednesday. The three-day long event -- IPACC, Indo-Pacific Armies Management Seminar (IPAMS), Senior Enlisted Leaders Forum (SELF) -- was organised by the Indian Army with the US Army as the co-host. The event witnessed participation from 30 countries.