Mauritania

Mauritanians vote Saturday on several contentious changes to their constitution sought by President Mohamed Ould Abdel Aziz but opposed by a wide swathe of opposition lawmakers and civil society groups. Aziz is pushing to abolish the country's Senate and several other state bodies and to make a small alteration to the national flag, measures that have galvanised a boycott movement hoping to sap the vote's credibility by forcing a low turnout. Polling stations open at…