When Kenyan police arrived in Haiti as part of a U.N.-backed mission earlier this year to tackle gang violence, hopes were high. Coordinated gang attacks on prisons, police stations and the main international airport had crippled the country’s capital and forced the prime minister to resign,

Diplomats at the United Nations Security Council on Wednesday voiced broad support for converting a security mission helping Haitian police fight escalating gang warfare into a formal U.N. peacekeeping mission,