I am willing to bet like many foreign jihadis this teenager is probably a loser who spends a lot of time in front of his computer and feels like joining ISIS is some kind of way to feel empowered:
A South Korean teenager who recently vanished in Turkey may have crossed the border into Syria to join the Islamic State (IS), a Seoul official said Tuesday.
The whereabouts of the 18-year-old Korean, identified only by his surname Kim, have been unknown since he arrived in Turkey on Jan. 10. A local Turkish newspaper claimed that he had exchanged e-mails with IS before traveling to the country.
Citing CCTV footage obtained by Turkish police, the ranking South Korean foreign ministry official said Kim took a van together with an unidentified man after meeting him in front of a hotel in Kilis, a city situated near the border with Syria.
Kim and the unknown man then got off near a refugee camp in Besiriye, about 18 kilometers southeast from Kilis, on that day, the official said, adding the van with a Syrian plate is an unlicensed taxi.
“Their whereabouts have not been known since they got off in Besiriye,” the official said, asking not to be named. “There are also no records showing that they crossed the border at a checkpoint.”
There has been no clear evidence so far supporting that Kim might have joined the IS group, but Seoul doesn’t exclude such a possibility, the official said.
“The government cannot presuppose a possibility (that Kim might have joined the IS), but (if it is confirmed), it is a very worrisome situation,” he said. [Yonhap]
You can read more at the link, but ultimately I am willing to bet this teenager will regret doing this.