9/11 & Invasion of Afghanistan
Following the September 11 Al-Qaeda led attacks on the Twin Towers in New York, the then American President G. W. Bush launched the 'Operation Enduring Freedom' along with its allies to root out the said militant organization which was then being hosted by 'Taliban Government' in Afghanistan.
Allies of Afghan War on Terror
Primarily the militarily powerful member states of NATO and then UN Security Council sanctioned 'International Security Assistance Force' led all the war operations in Afghanistan. The 'Northern Alliance' of Tajiks of Afghanistan backed the US operations. A new government was also installed.
Consequences of the Invasion
A guerrilla warfare began which claimed the lives of thousands of foreign soldiers, Taliban combatants, and Afghan civilians. The war led to massive migration of Afghan nationals into neighboring countries.
With all the ups and downs of the Afghan situation, the war continued until December 2014 when NATO announced official end of all combats. But this was in no way the end of Afghan crisis nor were all the foreign troops to leave the invaded land.
Withdrawal of American Troops from Afghanistan
The complete withdrawal was expected in 2015 but keeping in view the current Taliban attacks in Afghanistan, Obama Administration has announced to retain nearly 10,000 American soldiers there for an indefinite period.
Quadrilateral Peace Talks
Currently, a Quadrilateral effort, by Pakistan, China, Afghanistan, and the US, to initiate dialogue between the combatants and the Afghan Government is being made after the Pakistan-brokered talks broke last year.