Lazzarini was recommended to the Palestinian aid agency by Secretary-General Antonio Guterres; former chief stepped down over misconduct probe

Move comes after United Nations probe into alleged wrongdoing by UNRWA management clears organization of mismanaging donor funds

Ex-Jerusalem mayor Nir Barkat says UNRWA perpetuating conflict, destroying chances for peace with internal 'corruption and mismanagement'

An internal ethics report has alleged mismanagement and abuses of authority by Pierre Krahenbuhl, prompting his suspension

Foreign Ministry calls on UN agency for Palestinian refugees to release full findings of probe into alleged abuses of power by top management

UNRWA says inquiry has 'revealed management issues which relate specifically' to Pierre Krahenbuhl; deputy to take over on interim basis

Around 7,000 UNRWA workers walk out after demanding raises as agency faces unprecedented financial crisis

As UN probes alleged misconduct at agency, Mideast envoy Greenblatt says administration defunded the body 'in part due to UNRWA's unsustainable business model and fiscal practices'

After allegations of abuse in its top ranks, UN chief Guterres charges longtime UN official Christian Saunders with ensuring refugee agency's 'operational continuity'

Move follows Swiss decision to stop payments until investigation into Palestinian refugee agency is completed