Amrullah Saleh said that he is in Afghanistan.

On Tuesday, Afghanistan’s first vice President Amrullah Saleh said that he is in Afghanistan and is the “legitimate interim president” after President Ashraf Ghani fled the country when Taliban insurgents took Kabul.

Last week, during a meeting with the leadership of the security agencies chaired by Ghani, Saleh said that he was proud of the Afghan armed forces and that the government would do everything possible to strengthen resistance to the Taliban.

However, the Taliban captured the country in just a few days, not months, as predicted by U.S. intelligence services.

On Tuesday, Saleh wrote that it was “useless” to argue with U.S. President Joe Biden, who decided to withdraw American troops from Afghanistan in a series of tweets.

Saleh called on the Afghans to demonstrate that Afghanistan “is not Vietnam, and the Taliban are not even remotely similar to the Viet Cong (the term that is commonly used to refer to the communist formations of South Vietnam and the communist authorities of North Vietnam who supported them).”

Footage of desperate Afghans trying to climb onto a U.S. military plane taking off has sparked comparisons to a 1975 photo of people trying to board a helicopter on a roof in Saigon during the withdrawal of troops from Vietnam.

Saleh said that the Afghans, unlike the United States and NATO, “have not lost their strength of spirit” and see huge opportunities ahead. “Useless reservations are over. Join the resistance,” he wrote.

Saleh, whose whereabouts are unknown, said that he “will never, under any circumstances” bow to the Taliban and “will never betray” the memory of Ahmad Shah Massoud, the leader of the Northern Alliance, who was killed by two Al-Qaeda militants shortly before September 11, 2001, terrorist attacks in the United States.