How did the UK’s involvement in Afghanistan begin?

Parliament will be recalled on Wednesday to discuss the worsening situation in Afghanistan.

Here the PA news agency looks at some of the key questions.

– How did Britain’s involvement in Afghanistan begin and what was the impact on British troops?

In November, the first UK troops were deployed to Afghanistan when Royal Marines from 40 Commando helped to secure Bagram airfield.

The 20-year war in Afghanistan saw hundreds of UK personnel suffer life-changing injuries, with more than 450 deaths recorded.

– What is the situation 20 years later?

In April, US President Joe Biden announced the remaining 2,500 US troops would leave by September 11 – the 20th anniversary of the 9/11 attacks.

Defence Secretary Ben Wallace said Britain had been put in a “very difficult position” to continue the mission once the US announced its decision to leave.

– What did Boris Johnson say about Britain’s final military withdrawal from Afghanistan?

Speaking in July, Mr Johnson said gains had been achieved thanks to a US-led coalition, telling MPs: “We can take pride that Britain was part of that effort from the beginning.

“Over the last two decades, 150,000 members of our armed forces have served in Afghanistan – mainly in Helmand province, which was from 2006 onwards a focus of our operation.

“In the unforgiving desert of some of the world’s harshest terrain – and shoulder-to-shoulder with Afghan security forces – our servicemen and women sought to bring development and stability.

– What is currently unfolding in Afghanistan?

The country is on the brink of complete collapse amid reports that Taliban fighters have entered the outskirts of the capital Kabul.

Arrangements are reportedly being made to fly the British ambassador Sir Laurie Bristow out of the country.

In what could be seen as a sign of the speed of the collapse, countries were hurriedly removing their embassy staff, as helicopters were seen landing at the US embassy to ferry away remaining personnel.

– What are Mr Johnson and the British Government doing now?

Mr Johnson has called a meeting of the Government Cobra emergencies committee as Taliban fighters stood poised to take control of the Afghan capital Kabul.

Downing Street said ministers and senior officials would meet on Sunday afternoon to discuss the worsening situation.

The House of Commons authorities have also confirmed that parliament will be recalled on Wednesday.

Britain is sending 600 troops – including Paras from 16 Air Assault Brigade – on a mission to support the final departure of the remaining UK nationals as well as Afghans who worked with the UK in the country.

Defence Secretary Ben Wallace had previously indicated that they could be there until the end of the month, but given the speed of the collapse that would appear unlikely.

– How are British politicians reacting to what is unfolding and what suggestions have been made about what the UK should do?

There is deep anger among many MPs at the way Afghanistan is being abandoned to its fate.

The chairman of the Commons Foreign Affairs Committee Tom Tugendhat said it was “the biggest single foreign policy disaster” since Suez, while Defence Committee chairman Tobias Ellwood said it was a humiliation for the West.

Labour leader Sir Keir Starmer said ministers needed to explain what they intended to do to avert a looming humanitarian crisis and prevent Afghanistan again becoming a base for international terrorism.

Mr Ellwood said it was still not too late to turn the situation around, and called for the despatch of the Royal Navy carrier strike group to the region, urging the Prime Minister to convene an emergency conference of “like-minded nations” to see what could be done.

Mr Tugendhat, who served as an Army officer in Afghanistan, said the priority had to be to get as many people out as possible before Kabul collapsed.