With hundreds killed, abducted and injured in a worsening cycle of gang violence in Haiti, Kenya has offered to lead a mission to help stabilize the country.
The Ukrainian president joined many world leaders in calling for changes at the Security Council, where five permanent members wield veto power — a high barrier to taking action.
As other major leaders skipped the annual opening session of the General Assembly, Mr. Biden used his address to try to counter war fatigue both at home and abroad.