Islamic State’s most notorious executioner, Mohammed Emwazi, was able to slip by European intelligence forces and travel almost completely unhindered to Syria by posing as a migrant, an Islamic State jihadist has revealed. Emwazi, nicknamed Jihadi John by his prisoners, had already been placed on a terror watchlist by the British authorities before his departure as he was suspected of attempting to travel to Somalia to fight with Al Shabab. Despite this, he was able to travel on a British passport to Albania while carrying large sums of cash on one leg of the journey. His status as a potential terrorist was apparently not shared with the Greek authorities, who at a later stage of the journey detained him for four days before allowing him to continue on to Turkey. From there he was able to slip into Syria where he rose to prominence by murdering Western hostages including the American journalist James Foley. The details have come to light as an unnamed fighter who claims to have made the journey with him has published an 8,000 page account of their trip in the Islamic State’s monthly propaganda publication Dar al-Islam. The jihadi claims Emwazi mocked the European intelligence services for