The Taliban seized three more provincial capitals in Afghanistan, officials said on Wednesday, putting nine of the nation’s 34 in the insurgents’ hands amid the US withdrawal from the country.

The fall of the capitals of Badakhshan and Baghlan provinces to the northeast and Farah province to the west put increasing pressure on the country’s central government to stem the tide of the advance.

While Kabul itself has not been directly threatened in the advance, the Taliban offensive continues to stretch Afghan security forces now largely fighting against the insurgents on their own.

The Afghan government and military did not immediately respond to requests for comment.

Humayoon Shahidzada, a lawmaker from Farah, confirmed to The Associated Press his province’s capital fell. Hujatullah Kheradmand, a lawmaker from Badakhshan, said the Taliban had seized his province. An Afghan official, who spoke on condition of anonymity about an unacknowledged loss, said Baghlan’s capital also fell.

The insurgents earlier captured six other provincial capitals in the country in less than a week, including Kunduz city in Kunduz province — one of the country’s largest cities.

After a 20-year Western military mission and billions of dollars spent training and shoring up Afghan forces, many are at odds to explain why the regular forces have collapsed, fleeing the battle sometimes by the hundreds. The fighting has fallen largely to small groups of elite forces and the Afghan air force.

The success of the Taliban blitz has added urgency to the need to restart the long-stalled talks in Qatar that could end the fighting and move Afghanistan towards an inclusive interim administration. The insurgents have so far refused to return to the negotiating table.