US seals arms deal with Nigeria to fight Boko Haram
The US has agreed to sell high-tech aircraft to Nigeria for its campaign against the armed group Boko Haram.
Barack Obama had approved the sale as president but it was delayed after the Nigerian air force bombed a refugee camp in January.
The deal comes as the US military hosts a conference of most of Africa's defence chiefs in Stuttgart, Germany.
Al Jazeera's Mohammed Adow reports from the Nigerian capital Abuja.