The Latest: US envoy says Afghan peace process must speed up

The United States envoy who is negotiating with the Taliban to end the war in Afghanistan says the peace process needs to be accelerated in the wake of a deadly attack on a wedding in the capital, which was claimed by the local Islamic State affiliate.Zalmay Khalilzad said in a Twitter post Sunday that success in the peace process — one that includes the Taliban talking with the Afghan government and other Afghans — will put the country in a "much stronger" position to defeat the IS