Men stand near a mosque in the town of Koui, Central African Republic, April 27, 2017. Picture taken April 27, 2017. REUTERS/Baz Ratner 

Muslim men pray inside a mosque in the town of Koui, Central African Republic, April 27, 2017. Picture taken April 27, 2017. REUTERS/Baz Ratner 

An armed fighter belonging to the 3R armed militia stands guard while his leader General Sadiki (not pictured) talks to the media in the town of Koui, Central African Republic, April 27, 2017. Picture taken April 27, 2017. REUTERS/Baz Ratner 

An armed fighter belonging to the 3R armed militia stand guard while his leader General Sadiki (not pictured) talks to the media in the town of Koui, Central African Republic, April 27, 2017. Picture taken April 27, 2017. REUTERS/Baz Ratner 

Two men carry a pig on the back of a motorcycle near the town of Koui, Central African Republic, April 27, 2017. REUTERS/Baz Ratner 

A Cameroonian United Nations peacekeeping soldier guards women fleeing the village of Zike as they arrive to the village of Bambara, Central African Republic, April 25, 2017. Picture taken April 25, 2017. REUTERS/Baz Ratner TPX IMAGES OF THE DAY 

People watch a Cameroonian United Nations peacekeeper in the village of Bambara, Central African Republic, April 25, 2017. Picture taken April 25, 2017. REUTERS/Baz Ratner 

A Cameroonian United Nations peacekeeping soldier stands on a rubble of a house destroyed by violence in October, in the village of Bambara, Central African Republic, April 25, 2017. Picture taken April 25, 2017. REUTERS/Baz Ratner 

Cameroonian United Nations peacekeeping soldiers guard in the village of Bambara, Central African Republic, April 25, 2017. Picture taken April 25, 2017 REUTERS/Baz Ratner 

A Cameroonian United Nations peacekeeper talks to women fleeing the village of Zike as they arrive to the village of Bambara, Central African Republic, April 25, 2017. picture taken April 25, 2017. REUTERS/Baz Ratner 

A Cameroonian United Nations peacekeeper talks to women fleeing the village of Zike as they arrive to the village of Bambara, Central African Republic, April 25, 2017. picture taken April 25, 2017 REUTERS/Baz Ratner 

A Cameroonian United Nations peacekeeper talks to women fleeing the village of Zike as they arrive to the village of Bambara, Central African Republic, April 25, 2017. Picture taken April 25, 2017. REUTERS/Baz Ratner 

A girl looks from behind a wall in the town of Paoua, Central African Republic, April 25, 2017. Picture taken April 25, 2017. REUTERS/Baz Ratner 

A Cameroonian United Nations peacekeeping soldier guards women fleeing the village of Zike as they arrive to the village of Bambara, Central African Republic, April 25, 2017. Picture taken April 25, 2017. REUTERS/Baz Ratner 

A woman stands in the market in the town of Paoua, Central African Republic, April 25, 2017. Picture taken April 25, 2017. REUTERS/Baz Ratner 

Cameroonian United Nations peacekeeping soldiers guard in the village of Bambara, Central African Republic, April 25, 2017. Picture taken April 25, 2017 REUTERS/Baz Ratner 

A girl walk past Cameroonian United Nations peacekeeping soldiers on guard in the village of Bambara, Central African Republic, April 25, 2017. Picture taken April 25, 2017. REUTERS/Baz Ratner 

A Cameroonian United Nations peacekeeping soldier stands guard in the village of Bambara, Central African Republic, April 25, 2017. Picture taken April 25, 2017. REUTERS/Baz Ratner 

A man fixes a roof near the town of Paoua, Central African Republic, April 25, 2017. Picture taken April 25, 2017 REUTERS/Baz Ratner 

People gather near the town of Paoua, Central African Republic, April 25, 2017. Picture taken April 25, 2017. REUTERS/Baz Ratner 

A Cameroonian United Nations peacekeeping soldier patrols in the village of Bambara, Central African Republic, April 25, 2017. Picture taken April 25, 2017. REUTERS/Baz Ratner 

A Cameroonian United Nations peacekeeper talks to women fleeing the village of Zike as they arrive to the village of Bambara, Central African Republic, April 25, 2017. Picture taken April 25, 2017. REUTERS/Baz Ratner 

A man prays in a mosque in the town of Paoua, Central African Republic, April 25, 2017. Picture taken April 25, 2017. REUTERS/Baz Ratner 

A Cameroonian United Nations peacekeeper talks to women fleeing the village of Zike as they arrive to the village of Bambara, Central African Republic, April 25, 2017. Picture taken April 25, 2017. REUTERS/Baz Ratner 

A man lies on a mattress at a shelter for displaced people in Bangui, Central African Republic, April 24, 2017. REUTERS/Baz Ratner 

A girl eats a mango at a shelter for displaced people in Bangui, Central African Republic, April 24, 2017. REUTERS/Baz Ratner 

A girl walks through a shelter for displaced people in Bangui, Central African Republic, April 24, 2017. REUTERS/Baz Ratner 

A man writes verses of the Quran on a wooden board at a shelter for displaced people in Bangui, Central African Republic, April 24, 2017. REUTERS/Baz Ratner 

A woman carries bananas in Bangui, Central African Republic, April 24, 2017. REUTERS/Baz Ratner 

Senegalese United Nations peacekeeping soldiers ride a pickup truck while on patrol in Bangui, Central African Republic, April 24, 2017. REUTERS/Baz Ratner 

A woman holds her baby at a displaced shelter in Bangui, Central African Republic, April 24, 2017. REUTERS/Baz Ratner 

Children walk by houses that were destroyed during 2013 violent unrest in Bangui, Central African Republic, April 24, 2017. REUTERS/Baz Ratner 

A woman holds her baby at a displaced shelter in Bangui, Central African Republic, April 24, 2017. REUTERS/Baz Ratner 

A woman carries a tray with fish in Bangui, Central African Republic, April 24, 2017. REUTERS/Baz Ratner 

A man writes verses of the Quran on a wooden board at a displaced shelter in Bangui, Central African Republic, April 24, 2017. REUTERS/Baz Ratner TPX IMAGES OF THE DAY 

French President Francois Hollande (L) shakes hands with military personnel upon his arrival in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Dakutin/Pool

French President Francois Hollande (L) shakes hands with military personnel upon his arrival in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Dakutin/Pool

Central African President Faustin Touadera welcomes French President Francois Hollande upon his arrival in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande receives an honoriy medal (Grand maitre de l'ordre du merite) near Central Africa's President Faustin Touadera as they leaders gives a joint statement at the Presidential Palace in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande (L) and Central African Republic President Faustin Touadera gives a joint statement at the Presidential Palace in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande (L) and Central Africa's President Faustin Touadera (R) arrive at the Presidential Palace in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande gives a speech at the French Military base Sangaris Mpoko in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande gives a speech at the French Military base Sangaris Mpoko in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande sings the national anthem at the French Military base Sangaris Mpoko in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande gives a speech at the French Military base Sangaris Mpoko in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande (L) shakes hands with Central African President Faustin Touadera at the Presidential Palace in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande (L) shakes hands with Central African President Faustin Touadera at the Presidential Palace in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande greets soldiers upon his arrival in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande greets soldiers upon his arrival in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande greets soldiers upon his arrival in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande (C) and French Defence minister Jean-Yves Le Drian (2nd R) are welcomed by Central Africa's President Faustin Touadera (C) upon his arrival in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool 

French President Francois Hollande arrives at the presidential palace in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande (L) and French Defence minister Jean-Yves Le Drian (R) are welcomed by Central Africa's President Faustin Touadera (C) upon his arrival in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool 

French President Francois Hollande is welcomed by Central Africa's President Faustin Touadera (R) upon his arrival in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

French President Francois Hollande (C) and French Defence minister Jean-Yves Le Drian (R) are welcomed by Central Africa's President Faustin Touadera (C) upon his arrival in Bangui, Central African Republic May 13, 2016. REUTERS/Stephane De Sakutin/Pool 

French President Francois Hollande is welcomed by Central Africa's President Faustin Touadera (L) and military personnel upon his arrival in Bangui, Central African Republic May 13, 2016. REUTERS/Stephane De Sakutin/Pool

A soldier salutes French President Francois Hollande (L) upon his arrival in Bangui, Central Africain Republican on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

Central Africa's President Faustin Touadera (R) welcomes French President Francois Hollande (L) upon his arrival in Bangui, Central African Republic on May 13, 2016. REUTERS/Stephane De Sakutin/Pool

Central Africa's President Faustin Touadera (R) welcomes French President Francois Hollande (L) upon his arrival in Bangui, Central African Republic, May 13, 2016. Stephane De Sakutin/Pool

Central Africa's President Faustin Touadera (L) and French President Francois Hollande review an honour guard upon his arrival in Bangui, Central African Republic May 13, 2016. REUTERS/Stephane De Sakutin/Pool