Clash on the border of Afghanistan-Iran

There is some sporadic news coming out of western part of Afghanistan that the Taliban militants have clashed with the Iranian soldiers on the border of Nimroz province. It is unclear what has caused the confrontation but one thing is clear and must be understood by the Iranian government is that the Taliban will not be their friends--the thing that they hoped. It is known that Iran aided the Taliban in taking over districts and provinces across its eastern border, and even convinced government officials in Herat to give in to pressure mounted from the Taliban. No one expected the swift fall of Herat had it not been the help and pressure from Iran. 

Now this short skirmish is the beginning of a bitter and difficult future for Iran to deal with a terrorist group it helped to take over Afghanistan. The Taliban see Iran and its people as Rafidis, a derogatory term used by Sunni Wahhabi and Deobandi followers to delegitimate and dehumanize Shiite adherents as Muslims. Iran was not alone in helping the Taliban, Pakistan was another neighbor that provided significant support throughout the past two decades, which may experience the consequences of their actions since the Pakistan Taliban are getting motivated and bolder to fight the army.