Karnataka and TN have agreements and contracts on using rivers and dams from some time back.
Only motive of BJP & Congress is to play with the emotions of poorly informed Kannadigas and Tamilians to score cheap points.
There is no point in attacking others' business simply because they are in our place.
But it is hard to INFORM both the parties and to help them not to fall prey to the tricks conveniently employed by these so called Rajya-Sevaks - they are just devils in human form.
