New Delhi [India], June 20 (ANI): Rear Admiral Tran Thanh Nghiem, Commander of the Vietnam People's Navy, called on India's Naval Staff Chief Admiral R Hari Kumar and discussed the contemporary maritime environment and opportunities to enhance bilateral naval cooperation. Taking to Twitter, a Spokesperson of the Indian Navy said, "VAdm Tran Thanh Nghiem, CinC, VietnamPeoplesNavy (VPN) called on Adm R Hari Kumar CNS on 19