Q&A: Central African Republic's rebellion

After years of coups and rebellions, illegal weapons proliferate across the CAR

Rebels in the Central African Republic have agreed a ceasefire, after taking over several towns, including the key mining centre of Bria, since December.

The unrest has prompted the president to ask neighbouring countries for help - and troops have been sent over the border to help stop the rebel advance.

Who are the rebels?

Do they pose a real threat?

Mr Bozize has been in power in the Central African Republic since leading a coup in 2003

Can't the army halt the unrest?

Why is Chad so involved in CAR?

Is the international community doing anything to help?

What is in the deal?