◢ For the last two weeks, around 50 trucks traveling to or from Tajikistan have lain stranded on the northern and southern borders of Turkmenistan in a standoff that defies immediate explanation. Senior transportation officials in Dushanbe have told Eurasianet on condition of anonymity that one working suspicion is that the blockade may have been instigated by Iran, which shares a long border with Turkmenistan.