Shanghai, Feb. 23 : Pakistan President Asif Ali Zardari has said that the world is facing grave challenges imposed by non-state actors who are bent upon damaging world peace.

"We are not threatened by nations, but by the non-state actors," The News quoted Zardari, as saying.

Zardari said that the emergence of these elements, who have nothing to lose but everything to damage, was a new phenomenon, adding that Pakistan has been at the forefront of many worst international disputes and has managed to survive as a nation.

Speaking about the Sino-Pakistan ties, he said, Pakistan has always supported China as far as security and international politics were concerned. He also praised Chinese progress in science and technology.

"We will always be friends for a better today and a better tomorrow. We bask in your glory and Pakistan and every Pakistani is proud of success of China," Zardari said. (ANI)