After the war in Afghanistan began in 2001, the Taliban started an insurgency, which is known as the Taliban insurgency. The Taliban started to attack the forces of ISAF and NATO, in Afghanistan, and committed many terrorist attacks.  In the conflict, the Taliban fight against the Afghan government and its allies. Al-Qaeda is linked to the Taliban. With this, the conflict in the region spread to Pakistan. The related conflict in Pakistan is the insurgency in Khyber Pakhtunkhwa.

Because Afghanistan has seen a number of conflicts and wars in recent decades, its economy has changed, and many people depend on growing cash crops, such as poppy seeds which are used to produce illegal drugs such as opium, or heroin. Many people in Afghanistan do not think the problems are caused by the Taliban. Resolving the problem will therefore probably involve more effort than winning against the Taliban. It will also mean that there need to be changes in the economy, and the way in which the country is run.

Opium trade 

Currently, Afghanistan is one of the biggest producers of opium. While opium also has its uses as a regular drug, it is mainly used as an illegal drug. In 2001, Afghanistan produced only 11% of the world's opium, today it produces over ninety percent. In 2007, 93% of the non-pharmaceutical-grade opiates on the world market originated in Afghanistan. This amounts to an export value of about $4 billion; opium farmers earn about a quarter of this amount,  the rest goes to district officials, insurgents, warlords, and drug traffickers. The drug trade accounts for half of Afghanistan's GDP. 
Estimates made in 2006 by the United Nations Office on Drugs and Crime (UNODC) estimate that 52% of the nation's GDP, or $2.7 billion annually, is generated by the drug trade.

Areas where the security situation is worse produce more Opium; areas that are more stable seem to produce less. Many farmers in rural areas depend on selling poppy seeds. Opium is more profitable than wheat and destroying opium fields could possibly lead to discontent or unrest among the affected population.  Some 3.3 million Afghans are involved in producing opium. For this reason, some people say that eradicating  poppy crops is not a viable option. Some poppy eradication programs have, however, proven effective, especially in the north of Afghanistan. The  opium poppy eradication program of Balkh Governor Ustad Atta Mohammad Noor between 2005 and 2007 successfully reduced poppy cultivation in Balkh Province from 7,200 hectares in 2005 to zero by 2007.

The Afghanistan Opium Risk Assessment 2013, issued by the United Nations Office on Drugs and Crime, suggests that the Taliban has since 2008 been supporting farmers growing poppy, as a source of income for the insurgency.

The Taliban are not seen as a cause of the problem 
There have been wars and conflicts in Afghanistan for over thirty years. As a result, the country is among the poorest, and least developed countries in the world. It is also one of the most corrupt. Thirty-five percent of the poulation are unemployed, and more than half of the people live below the poverty line.

Western aid group Oxfam published an opinion poll they conducted in Afghanistan, in 2010. According to this poll, 83 percent of the Afghan population does not consider the Taliban to be militants. Poverty, unemployment and government corruption are seen as the main causes of war in their country. When  the U.S.-backed Afghan forces ousted the Taliban in late 2001, the level of violence increased. Nearly half of those surveyed said corruption and bad government were the main reasons for the ongoing war. Twelve percent said the Taliban insurgency was to blame.After the Taliban, the reason most people gave for the continued fighting was foreign interference, with twenty-five percent of respondents saying other countries were to blame.

2006 escalation
Since the start of 2006 Afghanistan has been facing a wave of attacks by improvised explosives and suicide bombers, particularly after NATO took command of the fight against insurgents in spring 2006.

Afghan President Hamid Karzai publicly condemned the methods used by the western powers. In June 2006 he said:

Insurgents were also criticized for their conduct. According to Human Rights Watch, bombing and other attacks on Afghan civilians by the Taliban (and to a lesser extent Hezb-e-Islami Gulbuddin), are reported to have "sharply escalated in 2006" with "at least 669 Afghan civilians were killed in at least 350 armed attacks, most of which appear to have been intentionally launched at civilians or civilian objects." 131 of insurgent attacks were suicide attacks which killed 212 civilians (732 wounded), 46 Afghan army and police members (101 wounded), and 12 foreign soldiers (63 wounded).

The United Nations estimated that for the first half of 2011, the civilian deaths rose by 15% and reached 1462, which is the worst death toll since the beginning of the war, despite the increase of foreign troops.

References

21st century in Afghanistan
Insurgencies
Insurgency