The US special envoy to Afghanistan Zalmay Khalilzad said Tuesday predictions that the Taliban will quickly overrun Afghan government forces and conquer Kabul once U.S. and coalition forces have withdrawn are unduly pessimistic.

Testifying before the US House Foreign Affairs Committee, Khalilzad said: I personally believe that the statements that their (Afghan) forces will disintegrate and the Talibs will take over in short order are mistaken.

His comments came as committee members expressed concern that President Joe Biden’s decision to fully withdraw all troops by September 11 will lead to chaos and intensified civil war.

AP reported that Michael McCaul, a Texas Republican and withdrawal critic, asserted that there is zero chance the Taliban will abide by the commitments their leaders made in a February 2020 agreement with the Trump administration, which included engaging in sustained peace negotiations and severing all forms of cooperation with and support for al-Qaida.

It seems all but certain the Taliban will try to overrun the country and return it to a pre-9/11 state after we have withdrawn, McCaul said.

They’ve already ramped up their attacks, taking new territory and bases since the (Biden) announcement was made. Without a military presence in country, the U.S. is giving them room to deepen their relationship with terrorist groups like al-Qaeda, who may seek to launch external attacks on us and our allies from the country once again.

Khalilzad argued that the Taliban have reason not to push for a military victory and instead pursue a negotiated political settlement that could give them international legitimacy and removal from certain American and United Nations sanctions.

They say they seek normalcy in terms of relations - acceptability, removal from sanctions, not to remain a pariah, Khalilzad said.

Khalilzad said the U.S. military withdrawal is proceeding so far so good, and added: We expect that to continue.

He said diplomatic efforts are underway to seek agreements with neighboring countries to position U.S. counterterrorism forces within strike distance of Afghanistan to be able to respond to future threats.