US Secretary of State Antony Blinken says Afghanistan would become a pariah state if the Taliban takes control by force.
It comes as a top-level Taliban delegation visits China to assure officials of their international obligations.
In China, the Taliban’s leadership assured Beijing the group will not allow Afghanistan to be used as a base for plotting against another country.
A delegation including co-founder Mullah Abdul Ghani Baradar is in China for talks as the group continues a sweeping offensive across Afghanistan, including areas along their shared border.
Beijing confirmed the thrust of the talks, which were led on the Chinese side by Foreign Minister Wang Yi.
However in Kabul, Afghan President Ashraf Ghani urged the international community to review the narrative of the willingness of the Taliban and their supporters on embracing a political solution.