Riot police at Greece's largest port, Piraeus, cordoned off the area around an Israeli cruise ship on Thursday to prevent hundreds of protesters from approaching. Demonstrators, waving Palestinian flags and holding flares, gathered in opposition to the arrival of the vessel, citing reports that off-duty Israeli soldiers were among the passengers. The protests are part of a wider movement across Greek ports and cities, fueled by anger over the ongoing conflict in Gaza and calls from left-wing opposition parties to end cooperation with Israel. Tensions have led to clashes with police and heightened political debate in Greece, a popular holiday destination for Israelis.