Signs Taliban looking to pledge allegiance to ISIS, experts warn

This scenario, says Waltz, who formerly commanded in the Middle East and Afghanistan, should cause the U.S. to rethink its position in the region. “We have a politically-driven timeline and we have a full withdrawal still not too far on the distant horizon when we have the rise of these militant groups -- whether its ISIS or Al Qaeda -- that could erase our gains in Afghanistan, could destabilize the country, push it towards civil war.”