AP Photo

The economic rise of China and India draws ever more attention. But the world has taken little notice of the rising border tensions and increasingly visible differences between the two giants.

With Barack Obama, US president, headed to Beijing and the Dalai Lama’s tour of the remote north-eastern Indian state of Arunachal Pradesh provoking an angry Chinese response, the China-India-US triangle and Tibet have emerged at the centre of escalating tensions.

China has resurrected its long-dormant claim to Arunachal Pradesh – almost three times as large as Taiwan – and stepped up military pressure along the 4,057km frontier with India through frequent incursions.

Beijing seems to be drawing...