AMMAN (Reuters) - Pakistani forces, under US pressure to enter the militant bastion of North Waziristan, will do so but in their own time and when adequate resources are available, Deputy Chairman of the Joint Chiefs of Staff, Lieutenant General Sardar Mahmood Ali Khan said on Monday. Lt-Gen Sardar Mahmood added that such a big task in the mountainous northwest was not 'firefighting and had to be done in sequence with other battles. Pakistan has come under fresh US pressure to send troops into North Waziristan following a failed bombing in New York claimed by Tehrik-e-Taliban Pakistan (TTP) which has fighters in northwestern areas including North Waziristan. Speaking on the sidelines of a conference in Jordan of special operations forces commanders, Khan said the army was still busy consolidating its operations following an earlier push into South Waziristan and needed to adhere to a schedule for what he called a long campaign. Asked if troops would eventually go into North Waziristan, home to a complex web of militant groups, to attack fighters there, he replied: Of course, all these areas which are affected are on our agenda, yes. The New York bomb plot suspect, Faisal Shahzad, 30, was arrested on Monday last week, two days after authorities say he parked a crude car bomb in Times Square. Authorities say he has been cooperating in the investigation. Some Western officials have questioned the determination of Pakistan to tackle militants as the long-time US ally addresses other problems, from a sluggish economy to power cuts that have made the government unpopular. Pakistan has proved capable of capturing militants, including some of Al-Qaedas most notorious heavyweights. Khalid Sheikh Mohammed, the accused mastermind of the September 11 attacks, was arrested in Pakistan in 2003. But Khan said North Waziristans geography made it an exceptionally difficult region in which to wage war and suggested any move into the region could not be done lightly. The army says it must secure the areas it has cleared before attacking there. But analysts say Pakistan sees the Afghan factions in North Waziristan as tools for its long-term objectives in Afghanistan, where Pakistan wants to see a friendly government and the sway of old rival India minimised. Basically, what the US wishes is that we go into North Waziristan, said a senior Pakistani intelligence official who declined to be identified. That means targeting the Haqqani and Gul Bahadur networks, the two main Afghan Taliban factions there. A retired Pakistani intelligence officer Asad Munir said US blame would be counter-productive. If they blame Pakistan, I dont think theyll win this war, he said. They (Pakistani forces) will go to North Waziristan but it will take time. If Pakistan is pressured, it will be disastrous. The 'do more mantra will lead to thinking in the military that this is happening despite their people being killed every day and ultimately foot soldiers will be demoralised, he said. Asked if he would accept more US special forces in Pakistan, the joint chiefs Khan declined to reply directly, noting there had been a limited number of these forces doing training in Pakistan for some time and they continued to play that role. Tension with the United States, Pakistans biggest aid donor, can worry stock investors but the main Pakistani index closed 0.16 percent up on Monday at 10,288.14 on hopes the International Monetary Fund would soon approve a fifth tranche of an $11.3 billion loan for Pakistan, dealers said.