A German Muslim convert fighting with ISIS has warned his compatriots that Germans should “brace themselves” for terrorist attacks. The German jihadist Christian Emde issued the warning in an interview posted to Facebook by Jürgen Todenhöfer, a journalist who has reported extensively from areas in Iraq and Syria controlled by ISIS. Emde, who was expelled from Britain in 2012 for possessing jihadist publications, said ISIS would eventually seek to take over Europe. “We will one day conquer Europe. We don’t just want to. We will. And we are sure about that.” …