- Greece is close to Turkey, has an influx of illegal migration from Syria and is in a dire financial situation
- These factor help make it an inviting hub for jihadist groups, experts say
- Says one source: 'Greece is not a target, just a gateway into Europe'
(CNN)The new Greek government has plenty of challenges ahead of it: A towering debt, chronic unemployment and relations with the rest of Europe. But it also has an urgent security problem.