"We see… Russia adopting a posture that [the] Taliban is a legitimate force against IS," Wells told lawmakers. "And we do not buy that as a justification of engagement with the Taliban."
Wells said while Russia’s policies have not been helpful, Moscow and all of Afghanistan’s neighbors should back a peace process.
"Countries like Iran and Russia do have an important role to play in the future stabilization of Afghanistan. Afghanistan’s neighbors are going to have to support any peace process," she said.
The Taliban launched its first major attack since a recent ceasefire against government forces earlier on Wednesday. At least 30 Afghan troops were killed during an insurgent offensive in Badghis Province. British Army Lt. Gen. Richard J. Cripwell, deputy commander of the Resolute Support mission, told reporters that they were disappointed that the Taliban decided to return to war.
READ MORE: Taliban Reportedly Angry Militants Are Making Selfies With Gov't Forces (PHOTOS)
The Taliban refused to extend a ceasefire they put in place through June 19 to mark the end of Ramadan. On June 7, Afghan President Ashraf Ghani announced a temporary unilateral ceasefire for the period between June 11 and June 19 but urged the Taliban, to no avail, to continue the cessation of hostilities.
* Daesh, also known as IS, ISIS, ISIL, is a terrorist organization, banned in Russia