The call from a UN expert came on the first-year anniversary of the strike against Ukraine International Airlines Flight PS752, which killed all 176 people on board.
Governments, UN agencies and aid organisations must unlock extra funds to help protect local humanitarian workers from death and injury when serving in conflict zones, says Christian Aid.
With an estimated 7,000 migrants entering Yemen each month, most of them seeking to reach Saudi Arabia and other Gulf countries, the United Nations migration agency has called for greater efforts to protect them from smugglers and other criminals.