U.S. envoy says latest peace talks with Taliban 'most productive' so far

U.S. and Taliban officials will reconvene on Tuesday to continue peace talks described as the "most productive session" by a top U.S. negotiator leading the discussions with the hardline Islamists group to end the Afghan war.The warring sides started a seventh round of peace talks last week, aiming to hammer out a schedule for the withdrawal of foreign troops in exchange for Taliban guarantees that international militant groups will not use Afghanistan as a base for launching attacks.In a tweet