President Ashraf Ghani, along with his close aides, flew out of Afghanistan on Sunday, paving way for Taliban to regain power 20 years after a US-led military invasion ousted them.A senior Afghan Interior Ministry official confirmed the development to Reuters. Asked for comment, the president's office said it "cannot say anything about Ashraf Ghani's movement for security reasons".

Shortly after President Ghani flew out of the country, Taliban commanders claimed that they "took control" of the presidential palace in Kabul, Russia's RT reported.The report quoted the group as saying that it expected a total handover of power.

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Two officials from the militant group told Reuters there would be no transitional government following their lighting sweep across Afghanistan.Ghani's destination was uncertain: a senior Interior Ministry official said he had left for Tajikistan, while a Foreign Ministry official said his location was unknown and the Taliban said it was checking his whereabouts.

Some local social media users branded him a "coward" for leaving them in chaos.Meanwhile, the US Embassy in Kabul said in a security alert that the security situation in the Afghan capital was changing quickly, including at the airport, where there were reports of gunfire as US troops aid an evacuation of most US personnel."There are reports of the airport taking fire; therefore we are instructing US citizens to shelter in place," the embassy said.

According to a statement issued by the insurgent group, the Taliban ordered its fighters to enter the city because "now there are reports that districts in Kabul have been evacuated, police have left their job of providing security, ministries have been evacuated, and security personnel from the Kabul administration have fled".

"So that God forbid the common thieves and robbers in Kabul do not mix, the abusers do not harm the people, the Islamic Emirate (Taliban) ordered its forces to enter the areas of Kabul from which the enemy went and areas there is a risk of theft and robbery," the statement continued.

The Taliban assured Kabul residents that they should not fear the troops and that none would enter anyone's homes or harass anyone.

Afghan Vice President Amrullah Saleh, who is said to have accompanied Ghani and the others who left, in a tweet vowed not to bow to the Taliban, but he did not respond in the message to reports of him leaving the country.

Acting defence minister Bismillah Mohammadi, earlier in the day, said that the president had handed the authority of solving the crisis in the country to political leaders. Mohammadi, according to ToloNews said that a delegation will travel to Doha on Monday for talks on the country’s situation.Meanwhile, sources close to the Taliban said that it has been agreed that Ghani will resign after a political agreement and hand the power to a transitional government.

Soon after an Afghanistan interior ministry official confirmed reports of Taliban entering Kabul from all sides earlier in the day, a spokesperson for the Taliban stated that the fighters have been ordered to remain at the city’s gates, and not enter it.

The Taliban's announcement signalled the insurgents were confident of taking power imminently, as the United States and other nations rushed to evacuate their citizens from the capital."The Islamic Emirate instructs all its forces to stand at the gates of Kabul, not to try to enter the city," a spokesperson for the Taliban tweeted.

Earlier in the day, Afghanistan Minister of Interior General Abdul Satar Mirzakwal announced that there will be a 'peaceful transfer of power' to a 'transitional government' hours after the Taliban began entering Kabul."The security of Kabul is the responsibility of the security forces," he said.President Ghani's government was left completely isolated on Sunday after the Taliban claimed the anti-Taliban northern stronghold of Mazar-i-Sharif and the eastern city of Jalalabad.

Like with most of the other captured cities, the seizure of power came after government forces surrendered or retreated.It left the Taliban holding all the cards in any negotiated surrender of the capital.On Saturday, Ghani sought to project authority with a national address in which he spoke of "re-mobilising" the military while seeking a "political solution" to the crisis.

A high-level delegation of Afghan political leadership including Speaker Wolesi Jirga Mir Rehman Rehamni also arrived in Islamabad on Sunday evening."Just received a high level Afghan political leadership delegation including Speaker Ulusi Jirga Mir Rehman Rehmani, Salah-ud-din Rabbani, Mohammad Yunus Qanooni, Ustad Mohammad Karim Khalili, Ahmad Zia Massoud, Ahmad Wali Massoud, Abdul Latif Pedram, and Khalid Noor," Pakistan’s Special Representative for Afghanistan Mohammad Sadiq wrote on his Twitter handle.

He said that matters of mutual interest will be discussed during the Afghan political leadership's visit.

Taliban enter Kabul

Taliban insurgents entered Kabul earlier today and said they expected to take power within days, promising to moderate their earlier hardline Islamic rule even as foreign diplomats and many locals tried to leave.

American diplomats were evacuated from their embassy by chopper after a lightning advance by the militants, who were poised to run Afghanistan again 20 years after they were toppled by US-led forces following the Sept 11 attacks on the United States.Taliban fighters were reaching the capital "from all sides", a senior Afghan interior ministry official told Reuters.

However, there were no reports of fighting.The group was in talks with the Western-backed government for a peaceful surrender, Taliban spokesperson Zabihullah Mujahid said."Taliban fighters are to be on standby on all entrances of Kabul until a peaceful and satisfactory transfer of power is agreed," he said in a statement.

Ali Ahmad Jalali, a US-based academic and former Afghan interior minister, could be named head of an interim administration in Kabul, three diplomatic sources said, though it was unclear whether the Taliban had agreed.

Known during their past rule for keeping girls out of school and their hardline practice of Islamic law, including punishments of amputation, stoning and hanging, the Taliban appear to be trying to project a more modern face.

Another spokesperson Suhail Shaheen said the group would protect the rights of women, as well as freedoms for media workers and diplomats."We assure the people, particularly in the city of Kabul, that their properties, their lives are safe," Shaheen told the BBC, saying a transfer of power was expected in days.The ease of the Taliban's advance, despite billions of dollars spent by the United States and others to build up local Afghan government forces, has stunned the world.

Choppers at embassy

US officials said diplomats were being ferried by helicopters to the airport from its embassy in the fortified Wazir Akbar Khan district. More American troops were being sent to help in the evacuations after the Taliban's surge brought the Islamist group to Kabul in a matter of days."Core" US team members were working from the airport, a US official said, while a NATO official said several European Union staff had moved to a safer location in the capital.

Earlier on Sunday, the insurgents captured the eastern city of Jalalabad without a fight, giving them control of one of the main highways into landlocked Afghanistan. They also took over the nearby Torkham border post with Pakistan, leaving Kabul airport the only way out of Afghanistan still in government hands.

"The governor has surrendered to the Taliban," a Jalalabad-based Afghan official told Reuters. "Allowing passage to the Taliban was the only way to save civilian lives."A video clip distributed by the Taliban showed people cheering and shouting "Allahu Akbar" - God is greatest - as a convoy of pickup trucks entered Jalalabad with fighters brandishing machine guns and the white Taliban flag.

After US-led forces withdrew the bulk of their remaining troops in the last month, the Taliban campaign accelerated as the Afghan military's defences appeared to collapse.President Joe Biden on Saturday authorised the deployment of 5,000 US troops to help evacuate citizens and ensure an "orderly and safe" drawdown of military personnel. A US defence official said that included 1,000 newly approved troops from the 82nd Airborne Division.

The Taliban said its rapid gains showed it was popularly accepted by the Afghan people.Biden said his administration had told Taliban officials in talks in Qatar that any action that put US personnel at risk "will be met with a swift and strong US military response".He has faced rising domestic criticism after sticking to a plan, initiated by his Republican predecessor Donald Trump, to end the US military mission in Afghanistan by Aug 31."An endless American presence in the middle of another country's civil conflict was not acceptable to me," Biden said on Saturday.