Previously secret agreement emerges as spokesmen for US military and Taliban clash on Twitter
The US military has warned the Taliban it must curb attacks inside Afghanistan and revealed that a US troop withdrawal agreement signed in February included an informal commitment for both sides to cut violence by 80%.
The previously secret arrangement was revealed in a Twitter spat between the US military spokesman Col Sonny Leggett and his Taliban counterpart Zabihullah Mujahid. It comes after a sharp escalation in militant attacks since the agreement was sealed.
