The collaboration between Bangladesh and China on the Teesta River could strain India-Bangladesh relations, as water-sharing has been a contentious issue. The Teesta River is vital for millions in both India and Bangladesh, and any changes in its management could impact irrigation and livelihoods. Additionally, China's involvement near India's Siliguri Corridor, a strategically sensitive area, may raise security concerns for India. This development could also influence regional geopolitics, with China strengthening its ties with Bangladesh.