BRUSSELS, Jan 17: North Atlantic Treaty Organisation Secretary-General Jaap de Hoop Scheffer has urged Pakistan to take stronger action to stop cross-border infiltration of insurgents into Afghanistan and crack down on Al Qaeda operatives in the country.

Speaking to reporters here on Wednesday, Me Scheffer said the alliance would not cede to ‘spoilers’ who were seeking to step up attacks on Nato forces in spring.

“Those seeking to try and undermine progress in Afghanistan... will find Nato on the front foot,” he said. But the Nato chief insisted that the porous border between Afghanistan and Pakistan was a ‘problem’ and said Islamabad must also do more to capture Al Qaeda operatives in Quetta.