From http://www.reuters.com/article/2014/06/01/us-afghanistan-usa-idUSKBN0EC1LT20140601

“They will definitely go back to fight, if health-wise they are able to go,” said a top official at Afghanistan’s spy agency, who asked to remain anonymous because of the sensitivity of the topic.

“They will be very dangerous people, because they have connections with regional and international terror organizations around the world.”

The Taliban denied the prisoners would return to battle but said the swap should not be regarded as a gesture of good will or a step towards the revival of peace talks between Islamist insurgents and the Afghan government.

“This is purely a negotiation between the Taliban and the Americans… It won’t help the peace process in any way, because we don’t believe in the peace process,” said Taliban spokesman Zabihullah Mujahid.