The administration signed a $1.5 billion agreement with Zambia, but only after being forced to abandon controversial data-sharing and resource-access provisions.
The alleged attacker, Hamam al-Hammami, had been banned from flying with Oman Air because of concerns about his radical views, a person familiar with the matter said.
The alleged attacker has been identified as Omani national Hammam al-Hamami, according to an Israeli official and another person familiar with the matter.
The African nation refused to make an agreement with the Trump administration, which has sought to slash foreign assistance and impose new terms on recipients.