New Delhi: The United States on April 21 said the fight against international terrorism would not be won until terrorism against India stopped permanently.

"As I have said many times during my stay in India, the fight against international terrorism will not be won until terrorism against India ends permanently. There can be no other legitimate stance by the US, no American compromise whatever on this elemental geopolitical and moral truth," US Ambassador to India Robert D Blackwill said in a statement in New Delhi.

The US, India and all civilised nations must have zero tolerance for terrorism.

"Otherwise, we sink into a swamp of moral relativism and strategic myopia", he said while announcing that he would return to pursue academics at Harvard University after a two-year stint as top American diplomat in New Delhi.

Blackwill said the two countries had "overlapping vital national interests" in promoting peace and freedom in Asia, slowing the spread of weapons of mass destruction and combating international terrorism.

PTI