Pakistan’s President Asif Ali Zardari says his country’s friendship with China has “gone through ups and downs” but it won’t be broken down by extremist attacks.

President Asif Ali Zardari reassured China on Wednesday that militant attacks would not disrupt Pakistan’s long-standing ties with its all-weather friend, as the two countries moved forward on the next phase of the multibillion-dollar China-Pakistan Economic Corridor (CPEC).