Tianjin/ New Delhi, Sept. 1 -- Delivering a stern message to "certain nations" that support terror outfits at the Shanghai Cooperation Organisation (SCO) summit in Tianjin, Prime Minister Narendra Modi said peace and stability are the foundation of development, but terrorism remains a grave obstacle.

He questioned whether open support extended by some nations to terror groups could be tolerated any longer.

Speaking at the 25th SCO summit in China's Tianjin, where Pakistan PM Shehbaz Sharif was also in attendance, PM Modi underlined that "terrorism is not just a threat to the security of any one country, but to humanity as a whole".

"No nation, no society, no citizen can claim immunity from it. That is why India has always emphasized unit...