How this Syrian refugee became a tech mentor

Asem Hasna has come a long way in the last few years.

In 2012, he was a university student in war-torn Syria. Now, he's a a refugee in Berlin who's helping teach other young refugee students the technical skills of computer coding and robotics.

Europe is dealing with the long-term consequences of the Syrian crisis. More than 1 million people migrated to the continent in 2015 alone. In the United States, President Donald Trump has framed refugees as potential threats, and he tried to temporarily ban Syrians from entering the country.

But Hasna's story provides a different perspective -- one of opportunity. As people question what can be done to help those fleeing war, his journey provides a potential model, melding personal resolve with assistance from nonprofits and corporations.

It started when Hasna lost part of his left leg in 2013. He says an artillery shell hit the ambulance he was driving in Syria.