India are grouped with China, South Korea, Oman and Bangladesh at the Asian Games in Doha.
Victories over the Philippines and Chinese Taipei put India in sight of a place in the final in the Asia-Oceania zonal qualifying round.
They won the boys and girls' titles respectively in the Jr Asian TT championship.
Ashu beat Syria's Abdulkarim Mohammad Al-Hasan 8-1 while Kundu defeated Nao Kusaka of Japan 8-0 inside 90 seconds in a lop-sided 72kg bronze medal bout.
'The worst case scenario is for China to behave like a bull in China shop, and brazenly and wantonly indulge in further encroachments, create obstacles to free navigation and convert SCS into an Air Defence Identification Zone.'
Since 55 per cent of Indian trade passes through the South China Sea, and with over $5 billion investments in the energy sector in Vietnam, it is imperative India actively pursues its national interests in the region, says Srikanth Kondapalli.