ATHENS Blocking the operations of the UN agency for Palestinian refugees (UNRWA) in Gaza risks violating international humanitarian law, the EU foreign policy chief warned on Thursday. Sharing UNRWA Commissioner General Philippe Lazzarini’s concerns about the catastrophic consequences of the agency’s possible collapse in the region, Josep Borrell said the recent Israeli legislation to ban UNRWA “threatens access to essential aid for millions” of people. “Protecting UNRWA is a collective duty,”