The head of a U.N. agency supporting Palestinian refugees, which is under a corruption investigation, said on Tuesday it still needed $150 million in donations to keep it operating until the end of this year. Pierre Krahenbuhl, commissioner-general of the United Nations Relief and Works Agency, said Switzerland, the Netherlands and Belgium had suspended their contributions to the organisation while the U.N. investigation – on whose findings he promised to act – was under way. “Our (2019) budget for all UNRWA operations in Gaza, the West Bank, East Jerusalem, Syria, Jordan, Lebanon is $1.2 billion.