KABUL: Pakistan has restored liaison officers at coordination centres on the Afghanistan border, Nato said on Monday, in a slight easing of tensions, after Nato air strikes last month killed two dozen Pakistani soldiers and provoked fury across the country.

But the US-led coalition's supply lines that run through Pakistan remain closed since the Nov. 26 incident and it is both in the interests of foreign forces as well as Pakistan that the routes be opened sooner rather than later, the alliance said.

Ties between the United States and Pakistan are fraught, with Islamabad blocking the Afghan supply line for one of the longest periods yet.

Last week, US lawmakers agreed to freeze $700 million in aid to Pakistan demanding it disrupt the movement of fertilisers used in making homemade bombs, the deadliest killer of foreign troops.

But the top Nato commander in Afghanistan, US General John Allen, had spoken to the Pakistani army chief General Ashfaq Kayani and there were signs of progress over the last few days, Brigadier General Carsten Jacobsen, a spokesman for the International Security Assistance Force (ISAF), told reporters.

“We have seen liaison officers, Pakistani officers, return to border coordination centres, General Allen has spoken to General Kayani, so we are moving in the right direction,” he said.

The border control centres were set up to help Nato and Afghan forces and their Pakistani counterparts on the other side of the porous border to coordinate operations against militants and avoid the kind of the incident that occurred last month in which two Pakistan army posts in Mohmand came under Nato fire.

Pakistan said the United States had carried out an unprovoked attack, an accusation rejected by Washington. An investigation has been ordered and Jacobsen declined to go into details of the incident ahead of the results.

But he urged Pakistan to reopen the two supply routes into Afghanistan, which carry just under a third of all cargo for foreign forces fighting in the landlocked nation.

“It is in our interest as well as Pakistan's interests, for economic reasons that they reopen these routes sooner rather than later,” he said.

Night Raids

Jacobsen also defended the use of night raids on Afghan homes to hunt down insurgents, despite yet another call overnight from Afghan President Hamid Karzai to end the practice, deeply hated by most Afghans.

“Night operations remain the safest form of operations conducted to take insurgents off the battlefield,” he said, adding that in 85 percent of such raids not a single shot is fired.