On a crisp morning last October, 198 migrants arrived on the Greek island of Leros, all of them seemingly desperate people seeking sanctuary in Europe. But hiding among them were four men with a very different agenda.

The four were posing as war-weary Syrians — all carrying doctored passports with false identities. And they were on a deadly mission for the Islamic State.

Two of the four would masquerade as migrants all the way to Paris. There, at 9:20 p.m. on Nov. 13, they would detonate suicide vests near the Stade de France sports complex, fulfilling their part in the worst attack on French soil since World War II.

The other two men would not make it that far.

Stopped upon arrival in Greece for lying about their identities, they were delayed — but only for a few weeks before being granted permission to continue their journey deeper into Europe. Their story — including key details never before disclosed — offers a cautionary tale for a continent suddenly facing its worst security threat since the end of the Cold War. The mens’ journey from the battlefields of Syria was reconstructed through interviews with intelligence officials and from French investigative documents obtained by The Washington Post, as well as an interview with an Islamic State commander.

Read More- Washington Post

Image courtesy of Daily Mail