Human Rights Watch (HRW) has called on the German government to explain whether it has imposed a Schengen-wide entry ban on prominent Palestinian surgeon and activist Dr. Ghassan Abu Sittah. The ban means that a non-citizen is expelled from one member state and is prevented from returning to the whole Schengen area, which consists of 26 European countries, for up to five years or longer. “Dr. Ghassan Abu Sittah has seen first-hand the atrocities taking place in Gaza,” Yasmine Ahmed, UK Director at HRW, said. “Germany should immediately explain why it has denied him entry and imposed this far-r…