While Beijing spars verbally with New Delhi on a regular basis over Arunachal Pradesh and, more recently, displayed belligerence on the issue of oil hunting in South China Sea, the Communist neighbour could now be spoiling for an actual fight. The threat of a Sino-Indian skirmish that may push the two Asian giants to the brink of war is so real that it has set the alarm bells ringing in the top echelons of the Union government.