"Every day, trucks laden with food, clothing, and other supplies cross the border from Turkey to Syria.
It is unclear who is picking up the goods."
It is a well known fact that Turkey aided Syrian opposition and people live under attack. Perhaps IS might have seized some goods. It is hard to dispatch anything when there is a war. But this news piece starts with a silly assumption. Completely loses the value.
For the second:
" From mid-2013, the Tunisian fighter had been responsible for smuggling oil from Syria’s eastern fields, which the group had by then commandeered. Black market oil quickly became the main driver of Isis revenues – and Turkish buyers were its main clients."
Smuggling. So Turkish government is perpetrator because there are oil smugglers? Please. IS sells oil to black market and smugglers (probably even Syrian Government) takes it. How is Turkish government is a supporter of IS here? Smuggling is a decades old problem in south east Turkey (Mostly Kurdish area). They tried to prevent it with special high tech chemical marker dyes and strict controls but you cannot stop it.
Also keep in mind that Guardian always use anti government sources for Turkish news. (Mostly left leaning, pro-kurdish or Gulenist.).