I would say that Mali is a state where there is a peace process that is struggling to move ahead and make progress. I wouldn't say it's a failed state, because there is a government that is in place that is working to try to exert its authority across the entirety of its territory. There are certainly pockets of Mali that one might describe as ungoverned space where these terrorist groups and these criminal groups can operate more freely.
On April 19th, 2018. See this statement in context.