The offer from the militants comes amid soaring violence that has threatened to derail US-backed efforts to bring Kabul and the Taliban to the negotiating table and seek an end to Afghanistan's nearly 19-year war.
Afghan officials say eight civilians are among 45 people killed in air raids in eastern Herat province.
An Afghan government official who did not want to be named said seven migrants had died and 30 were still missing, according to survivors who returned to Herat, a province in Afghanistan on the border with Iran.
On a piece of unowned land between Iran and Afghanistan, a small makeshift clinic is offering the first medical response to dozens of refugees returning from Iran - and many return with stories of horrendous injustice.
The activists were travelling from Herat to neighbouring Farah province on Tuesday evening when their convoy was stopped by the Taliban.
At least 35 people were killed and 27 others wounded in western Afghanistan when the bus they were travelling in hit a roadside bomb, officials say, a day after the UN warned civilians were dying at "shocking" levels in the war-torn country.
Aid organisations say thousands of people have been affected by flash floods in western Afghanistan.
The latest violence comes despite stepped-up efforts by the United States to find a negotiated end to the country’s 17-year war.
It's not opium farming but cooking meth that the district of Ghoryan quickly earned a reputation for, with traffickers buying the drug from locals at phenomenally low prices.
No group has taken responsibility for the assault on two army outposts late in Herat's Shindand district, but authorities blame the Taliban.
Meanwhile, a director of a local TV station was kidnapped in the eastern Nangarhar province and a suspected US drone strike in the Paktika province killed a local government employee believed to have links to militants.
Breaking traditional barriers in conservative Herat province the war torn country's first female coders have created a game based on Afghanistan's struggle to eradicate the vast opium poppy fields ruled by the Taliban.
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