Militants have over the last 10 days carried out a series of attacks in the northwest against a key airport and military supply route and have killed several tribal chiefs. The attacks may be seen as part of a deliberate bid to prevent the Pakistani military from taking part with NATO in a joint operation to defeat the Taliban in Afghanistan's Kunar Valley and in the troubled Bajaur and Mohmand tribal areas on the Afghan border.Militants have launched 17 rocket and missile attacks this month against the airport in Peshawar, the main town in North West Frontier Province.
The militants blockaded the key Khyber Pass route for fuel tankers and trucks supplying international forces in Afghanistan. The route re-opened on Monday after the government barred the movement of convoys on safety grounds following the hijacking and looting by militants of 12 trucks and two Humvee armoured vehicles last week.
Militants have in recent days killed several key tribal chiefs in Bajaur who were trying to form pro-government lashkars (militias) to fight against the Taliban, and have abducted several others.
On Tuesday a clash between Taliban militants and pro-government tribal elders left at least five people dead, according to official government sources in Bajaur.
The Pakistani government launched a major offensive against militants in Bajaur three months ago and Pakistani troops and tribal militias are continuing to battle Taliban guerrillas there.
Taliban gunmen exchanged fire with tribal leaders holed up in a fortress-like compound in Bajaur for several hours late on Monday. Suspected Taliban militants are also reported to have killed several tribal elders there the same day.
Taliban militants carried out attacks in the Orakzai tribal area a few weeks ago and forced local tribes to stay neutral and abandon all tribal militia activities against the Taliban instigated by the government.
The government's efforts to sow divisions within the militants' rank and file has also proved ineffective.
Taliban commander Abdul Wali chose to keep out of the conflict but refused to support the Pakistani army against the militants in Bajaur. The various small groups previously working under Wali's command however, backed the militants in Bajaur against the army.
A tribal warlord in the Khyber tribal area bordering Afghanistan, Mangal Bagh, has also made clear to the government that he would rather remain neutral and not take up arms against Taliban militants seeking to hijack NATO convoys in the region and cut off supply routes.
The overwhelming majority of supplies for international forces in Afghanistan are shipped into the southern Pakistani port city of Karachi and cross the border via Balochistan and the Khyber Pass. There are virtually no alternative routes available.