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,

More than 20,000 people have been displaced across Haiti's capital Port-au-Prince in four days, a UN agency said Saturday, as residents flee gang violence that has crippled the troubled Caribbean nation.

United Nations evacuation flights are set to land in Panama City this week as the international organization removes staff from Haiti due to a sharp escalation in violence by armed gangs that have expanded their control over the capital Port-au-Prince.