These are 4 reasons Buhari listed as the cause of Nigeria’s problems. Read on:
 1. No savings and and infrastructural development by the past administration
He said:
“For example, between 1999 and 2015, when we produced an average of 2.1 million barrels of oil per day, and oil prices stood at an average of $100 per barrel, we did not save, neither did we develop infrastructure. Suddenly, when we came in 2015, oil prices fell to about 30 dollars per barrel.

“I asked; where are the savings? There were none. Where are the railways? The roads? Power? None. I further asked; what did we do with billions of dollars that we made over the years? They said we bought food. Food with billions of dollars? I did not believe, and still do not believe.”

2. Nigerians are eating what they grow.
“People in the South eat tubers, those in the North eat grains, which they plant, and those constitute over 60 per cent of what we eat. So, where did the billions of dollars go? We did a lot of damage to ourselves by not developing infrastructure when we had the money.”

3. No leadership in the military.
Buhari said that the present administration: “raised the morale of our military, changed the leadership, re-equipped and retrained them; USA, Britain, and some other countries helped us, and today, the pride of our military is restored. “Boko Haram ran riot, killing innocent people in churches, mosques, markets, schools, motor parks, and so on. And they would then shout Allahu Akbar. But if they truly knew Allah, they would not do such evil. Neither Islam, nor any other religion I know of, advocates hurting the innocent. But they shed innocent blood, killed people in their thousands. Now, we have dealt with that insurgency, and subverted their recruitment base.”

4.Those that loot Nigeria money are angry.
“Those who stole Nigeria dry are not happy. They recruited the militants against us in the Niger Delta, and began to sabotage oil infrastructure. We lose millions of barrels per day, at a time when every dollar we can earn, counts. It is a disgrace that a minimum of 27 states, out of 36 that we have in Nigeria, can’t pay salaries,”