Mr Trump’s unprecedented negotiations with the Taliban were aimed at ending America’s longest war and bringing US troops home. It's something the American people have been expecting for a while and both Mr Trump and his predecessor, Barack Obama, have promised to get done, without success. But disagreements remain on how a withdrawal should happen.
The number of US troops in Afghanistan today - about 14,000 - is higher than when Mr Trump entered the White House in 2017. The peace deal with the Taliban was expected to see 5,500 troops withdrawn within five months.
Ending America’s long and costly war is one of the few areas where Democratic candidates agree with the president. The third Democratic debate this week included a discussion on Afghanistan with candidates called on to explain their vision of how to end it.
Senator Elizabeth Warren, one of the leading Democratic contenders, said US withdrawal should start “today” even without a deal with the Taliban. Ms Warren who belongs to the progressive wing of the Democratic party, said what the US is doing in Afghanistan is not helping the safety and security of the United States, Afghanistan, or the world. She added that the US military cannot solve the problem of terrorism across the world.
Senator Bernie Sanders, one of the most progressive US politicians and a consistent critic of successive administrations' foreign policy, boasted that he had been the only person on stage to have voted against “all three of Trump's military budgets”. He said: “We don't have to spend $750 billion on the military when we don’t even know who our enemy is.”
However, critics of an immediate withdrawal of troops from Afghanistan, including senior military officials, believe that ending the long war must be done carefully to ensure that the country does not once again become a safe haven for terrorist groups and future attacks.
General Joseph Dunford, chairman of the Joint Chiefs of Staff, has recently warned against withdrawal from Afghanistan as he believes the country still needs support to deal with increased levels of violence. General Dunford has said that the United States needs to bring peace and stability to Afghanistan and make sure that the country is not a “sanctuary”.
The Afghanistan war began after Al-Qaeda operatives crashed airplanes into the World Trade Centre in New York , into the Pentagon and into a field in Pennsylvania on September 11, 2001, killing nearly three thousand people. Afghanistan was a base for al-Qaeda and one of the countries where the attacks had been planned, although none of the 19 attackers were Afghans. President George W Bush launched the “war against terrorism" which led to the invasion of Afghanistan and later Iraq.
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During the debate the Democratic frontrunner and former Vice President Joe Biden said the US does not need troops on the ground in Afghanistan and suggested that Pakistan can provide bases for US forces to ensure Afghanistan does not become a terrorist haven.
Pete Buttigieg, the mayor of South Bend, Indiana and a veteran who served under General Dunford in Afghanistan, also agreed that the US must put an end to an apparently endless war in a way that ensures Afghanistan is never again used for an attack against the United States, but said that it did not require an open-ended commitment of ground troops.
Critics of President Trump believe that negotiating with the Taliban alone can not provide a sustainable solution for Afghanistan.
Ali Soufan, a former FBI special agent who investigated international terrorism cases and is a member of the Homeland Security Advisory Council, says a peace deal must include not only the Taliban, but also the Afghan government and all other political factions in the country. He told The Independent: “At the table we must include the concerns of the democratically elected government, ethnic and religious minorities, women, the security forces, and so on.”
Referring to the chaos of the US withdrawal from Vietnam in the mid-1970s following another protracted foreign war, he added “to simply just leave could result in another Saigon. We cannot ignore our friends and we cannot ignore the violent fate that would befall them, including from terrorist groups, if we get this wrong.”
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Nearly 200,000 people have been killed in Afghanistan and Pakistan since 2001, over 60,000 of them civilians, Brown University estimates. These figures do not include deaths from malnutrition, damaged health systems and environment.
So far nearly 7,000 American and over 600 British service personnel have died in the warzones of Iraq, Afghanistan, and Pakistan in addition to thousands of local military and police deaths. Britain has about 1,000 troops still in Afghanistan.
John Glaser, foreign policy director at the libertarian CATO Institute in Washington, says the argument that the war must continue in order to protect the United States from terrorists is “absurd”.
He told The Independent: “There is zero evidence - zero - that ‘fighting them over there’ has stopped us having to ‘fight them over here’. The idea that a ‘safe haven’ in Afghanistan will somehow enable al-Qaeda or some other group to launch transnational attacks into US soil is largely a myth.
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“Having a plot territory in remote, landlocked Afghanistan just isn’t much help to terrorist groups trying to attack the US, and not one of the jihadist-inspired attacks on US soil since 9/11 was committed by someone with operational ties to terrorist groups within any safe haven abroad.”
Beyond the human cost, the total US spending for the war in Afghanistan has been approximately $2 trillion so far, according to Brown University. In addition to the federal costs, millions of dollars have been spent by state, municipal, and private entities on services for returning veterans and their families.