OPINION: This week saw Nigerian President Muhammadu Buhari sworn in for a second term, crowning two decades of unbroken civilian rule after a military dictatorship in which, as a young officer, he had played several key roles.

Having just signed off an ambitious $30 billion budget, based on an optimistic exchange rate prediction with projected oil sales of 2.3 million barrels per day, Buhari still reckons he can drive Nigeria out of recession.