Cranking up pressure on Pakistan which is facing Taliban onslaught, Britain on Tuesday asked Islamabad to make sure that its writ runs across the entire country and its nuclear weapons are under "lock and key".
"It's not acceptable for a terrorist organisation to claim important towns and cities," British Foreign Secretary David Miliband told CNN in an interview.
Miliband was apparently referring to the Taliban taking over the Swat Valley and some areas near Pakistan's capital.
"It's essential that the Government of Pakistan ensure that their writ runs across the whole of their territory," he said.
The British Foreign Secretary also spoke about the increasing concern about the safety and security of Pakistan's nuclear weapons with Taliban and al-Qaeda stepping up their operations.
"We, obviously, along with the whole world, want to make sure that anyone with a nuclear arsenal keeps it under lock and key," Miliband, who met Pakistan President Asif Ali Zardari in New York, said in the interview.
Miliband, however, said, "I've never been presented with any intelligence evidence that suggests that the Pakistani arsenal is not under lock and key."
"The western part of Pakistan is vital to everything that the US and its coalition allies are trying to do in Afghanistan. You can't have stability in Afghanistan without stability in Pakistan," Miliband said.