Pakistan has long been accused by its neighbours India and Afghanistan, and western nations like the United States, and the United Kingdom of its involvement in terrorist activities in the region and beyond.
 Pakistan's tribal region along the border of Afghanistan has been claimed to be a "haven for terrorists" by western media and the United States Defense Secretary.
 According to an analysis published by the Saban Center for Middle East Policy at Brookings Institution in 2008, Pakistan was, "with the possible exception of Iran, perhaps the world’s most active sponsor of terrorist groups... aiding groups that pose a direct threat to the United States."
 Daniel Byman, an author, also wrote that, "Pakistan is probably 2008's most active sponsor of terrorism".
The 1989 to 1992 phase of the Afghan Civil War began after the Soviet Union withdrew from Afghanistan, leaving the Afghan communist government to fend for itself against the Mujahideen.
 After several years of fighting, the government fell in 1992.
 However, the civil war continued with infighting within the government, and from 1994 insurgents such as the Taliban attempting to bring down the new government which they accused of corruption.
 Pakistan's intelligence agency, the ISI, wanted the Mujahideen to establish a government in Afghanistan.
 The director-general of the ISI, Hamid Gul, was interested in an Islamic revolution which would transcend national borders, not just in Afghanistan and Pakistan but also in Central Asia.
 To set up the proposed Mujahideen government, Hamid Gul ordered an assault on Jalalabad-with the intent on using it as the capital for the new government Pakistan was interested in establishing in Afghanistan.
Mawlawi Jalaluddin Haqqani (Pashto: جلال الدين حقاني‎ ) (born 1939) is the leader of the Haqqani network, an insurgent group fighting in guerilla warfare initially against US-led NATO forces, and the present government of Afghanistan they support.
 He distinguished himself as an internationally sponsored insurgent fighter in the 1980s during the Soviet war in Afghanistan, including Operation Magistral.
 By 2004, he was directing pro-Taliban militants to launch a holy war in Afghanistan.
 Within Pakistan, Jalaluddin had a cordial relation with Pakistan but he did not act against the TTP, earning controversy though Pakistan saw him as a strategic asset who could mediate between the various factions.
 Jalaluddin retains considerable local popularity on the Afghanistan-Pakistan border, and he is the most experienced Islamist leader in the region.
 Steve Coll, author of "Ghost Wars", claims that Haqqani introduced suicide bombing in the Afghanistan-Pakistan region.
Pāṛachinār (Pashto: پاړه چنار‎ ; Urdu: ‎ ), formerly called Tutki, is the capital of Kurram Agency, and the largest city of the Federally Administered Tribal Areas of Pakistan.
 Parachinar is situated on a neck of Pakistani territory south of Peshawar, that juts into Paktia Province of Afghanistan.
 It is the closest point in Pakistan to Kabul and borders on the Tora Bora region of Afghanistan.
Pewar its 16 km far from the capital city Parachinar of Kurram Agency, and the one of the village near to parachinar Federally Administered Tribal Areas of Pakistan.
 Pewar is situated on a neck of Pakistani territory south of Peshawar, that juts into Paktia Province of Afghanistan.
 It is the closest point in Pakistan to Kabul and borders on the Tora Bora region of Afghanistan.
 Turi, Bangash, Orakzai, Zazai, Mangal and Para Tsamkani are the major tribes in Pewar,Parachinar.
 Pewar has four seasons.
 Pewar is very famous for its fresh fruits, fresh vegetables and snowfall.
The Tehran Eight was a political union of Shi'a Afghan Mujahideen mainly of the Hazara ethnic group, supported by Iran during the Soviet war in Afghanistan.
 The Tehran Eight fought against the PDPA government and the supporting Soviet troops.
 It formed the second largest Mujahedeen force, after the Peshawar Seven (a Sunni alliance supported by Pakistan).
Xinjiang ( ; ; Uyghur: شىنجاڭ ‎, ULY: "Shinjang" ), officially the Xinjiang Uyghur Autonomous Region, is a provincial-level autonomous region of China in the northwest of the country.
 It is the largest Chinese administrative division and the eighth largest country subdivision in the world, spanning over 1.6 million km (640,000 square miles).
 Xinjiang contains the disputed territory of Aksai Chin, which is administered by China.
 Xinjiang borders the countries of Mongolia, Russia, Kazakhstan, Kyrgyzstan, Tajikistan, Afghanistan, Pakistan and India.
 The rugged Karakoram, Kunlun, and Tian Shan mountain ranges occupy much of Xinjiang's borders, as well as its western and southern regions.
 Xinjiang also borders Tibet Autonomous Region and the provinces of Gansu and Qinghai.
 The most well-known route of the historical Silk Road ran through the territory from the east to its northwestern border.
 In recent decades, abundant oil and mineral reserves have been found in Xinjiang, and it is currently China's largest natural gas-producing region.
Afghan Canadians are Canadians with ancestry from Afghanistan.
 Their ethnic origin may come from any of the ethnic groups of Afghanistan.
 In the Canada 2001 Census about 25,230 Canadians were from Afghanistan.
 The former Minister of Foreign Affairs Bill Graham has recently said there are about 80,000 people from Afghanistan in Canada.
 Due to the political borders at earlier times, some of these Afghan immigrants may have been ethnic Pashtuns from British India (present-day Pakistan) or Afghanistan.
Tajiks in Pakistan (Urdu: تاجک‎ ) have inhabited north western valleys which lay adjacent to Tajikistan since ancient time, though many are not counted as ethnic Tajik's due to census irregularities.
 Small numbers of Tajiks had travelled to what is now Pakistan as technocrats, bureaucrats, soldiers, traders, scientists, architects, teachers, theologians and Sufis during the Islamic Sultanates and Mughal Empire and settled permanently .
 There are many shrines dotted throughout Pakistan in honour of noted Tajik noblemen.
 Some Pakistanis claim Tajik ancestry.
 In recent years, many Tajiks from Tajikistan have also settled in Pakistan due to the economic conditions prevalent in their home country , many have settled in the northern city of Ishkuman.
 In 1979, with the invasion by the Soviet Union of Afghanistan, a large number of Tajik refugees came from Afghanistan and settled throughout Pakistan .
 Exact numbers are difficult to ascertain as many don't have official identity cards.
 There also large number of Tajiks from Afghanistan that have settled in Pakistan permanently.
 Many Tajik refugees from Tajikistan lived in Pakistan and some of them returned to Tajikistan.
 At least 7.3% of Afghans in Pakistan are ethnic Tajiks.
 Additionally, there is a sizeable community of Chinese Tajiks in Pakistan.
Tora Bora (Pashto: توره بوړه‎ , "Black Cave") is a cave complex, part of the Spīn Ghar mountain range of eastern Afghanistan.
 It is situated in the Pachir Aw Agam District of Nangarhar, approximately 50 km west of the Khyber Pass and 10 km north of the border of the Federally Administered Tribal Areas in Pakistan.
 Tora Bora was known to be a stronghold location of the Taliban, used by military forces against the Soviet Union during the 1980s.
 Tora Bora and the surrounding Spīn Ghar range had natural caverns formed by streams eating into the limestone, that had later been expanded into a CIA-financed complex built for the Mujahedeen.

Question: What region of Afghanistan borders Pewar, Pakistan and was home to the Mujahedeen?
Answer: Tora Bora