Swedish official Karin Landgren, who is serving in Nepal on behalf of the UN, will now be the Secretary General's top envoy to the Himalayan country as the world body cuts down the strength of its mission with a view to wind up over a period of time.
Having served as the Secretary-General's Deputy Special Representative there since September 2008, Landgren will now replace Ian Martin as the UN Secretary General's top envoy in the nation.
The UN mission in Nepal oversees the process of political reconciliation in the country where the Maoists were elected to power in last year's election.
Joseph Mutaboba of Rwanda is being appointed as top United Nations envoy to Guinea-Bissau.
As the Secretary-General's Representative in Guinea-Bissau, Mutaboba will head the UN Peace-building Support Office in that country, replacing Shola Omoregie, who retired on December 31 last, after more than 30 years of continuous service with the world body.
Mutaboba has had a long career in diplomacy and foreign affairs, and is currently serving as the Rwandan President's Special Envoy to the Great Lakes Region.