President Faustin-Archange Touadera imposed it in January, when rebels angry at his re-election attacked towns and villages.
However, armed groups are stepping up their attacks, forcing more than 200,000 refugees to leave the country.
The UN warns nearly two million people may die without assistance.
So why is it so difficult to contain the violence?
Presenter: Halla Mohieddeen
Moussa Abdoulaye - Journalist and Political Analyst in Central African Republic.
Lewis Mudge - Central Africa Director, Human Rights Watch.
Peter Knoope - Fellow, Institute for Justice and Reconciliation.
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