A humanitarian expert says civilians in Gaza City are facing an 'impossible choice'toggle caption Eyad Baba/AFP via Getty ImagesMajor aid groups suspended or significantly scaled back their remaining operations in eastern Gaza City on Tuesday after Israeli tanks reached the city's outskirts as part of a ground offensive. "People in Gaza City are facing an impossible choice: live under bombardment and famine, or risk a dangerous journey south where they know that there are no services that can accommodate them," said Shaina Low, a communications adviser for the Norwegian Refugee Council (NRC). "What we are witnessing is mass forcible transfer of Palestinians from Gaza City, which is a war crime and must be stopped." Interview highlightsOn what Gaza City colleagues have been telling her:I was in touch with a number of colleagues yesterday evening who told me stories of horror, and just facing tremendous fear. These are the questions, impossible questions, that our staff and hundreds of thousands of Palestinians in Gaza City are facing right now.