US President Joe Biden has said that "chaos" was inevitable once the United States decided to leave Afghanistan after two decades of war.
Mr Biden told ABC News in an interview that he didn't know how this could happen "without chaos ensuing".
He said the Taliban was cooperating with evacuation of Americans and foreigners from Kabul, but US forces were facing "difficulty" in getting Afghan allies out.
"They're cooperating, letting American citizens get out, American personnel get out, embassies get out, etcetera, but they're having - we're having some more difficulty having those who helped us when we were in there," he said.
Earlier, the US had said it shared the same goals on Afghanistan as frequent adversaries China and Russia, which have quickly moved to work with the triumphant Taliban.
Deputy Secretary of State Wendy Sherman pointed to a statement issued Monday by the UN Security Council, where China and Russia wield veto power, that called for an inclusive new government.
The statement "speaks to the fact that we are all in the same place, which is calling on the Taliban to ensure justice and equal rights and inclusion, for there to be no violence, for people to be able to leave when they can," Ms Sherman told reporters.
"So I think right now there's very strong unanimity," said Ms Sherman, who last month became the most high-ranking member of President Joe Biden's administration to travel to China.
Both Russia and China stepped up contacts with the Taliban after the United States decided to withdraw from Afghanistan, ending a 20-year military involvement and setting off the swift crumbling of the government in Kabul.
Despite commentary gloating of US disaster in Afghanistan, both China and Russia are seen as eager to avoid instability and safe havens for Islamist extremists who could carry out attacks.
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