The former president, now suspended from social media, congratulated the African country on its national Twitter ban.
Nigeria has seen several such attacks and kidnappings in recent years.
Armed groups in the region are known to kidnap people for money and for the release of their members from jail.
Boko Haram claimed responsibility for last Friday’s abduction of the students from the all-boys school in the Katsina State village of Kankara.
When armed patrols go by, parents outside the school momentarily gain hope that they may have found their sons.
The military was in gunfights with bandits in a forest as it tried to find the 400 missing students.
The British-Nigerian star discusses his role in Steve McQueen’s “Red, White and Blue” and aligning his politics with his career.
From the Muslim ban to the family separations at the U.S.-Mexico border, President Donald Trump’s harsh immigration policies have made it harder and more expensive to immigrate or seek asylum in America.
The Democratic presidential nominee called on the U.S. to "stand with Nigerians who are peacefully demonstrating for police reform."
Thousands of Nigerians have demonstrated in Lagos for nearly two weeks against a police unit, the Special Anti-Robbery Squad (SARS).