In Libya, US commandos captured an al-Qaeda leader accused of the 1998 bombings of the US embassies in Kenya and Tanzania.
Anas al-Liby was seized in the capital Tripoli.
And a leader of the al-Shabab group was targeted in southern Somalia, but that raid appears to have failed. The al-Shabab leader - who has not been identified - is suspected of involvement in last month's attack in the Westgate shopping centre in Kenya's capital Nairobi, which left at least 67 people dead.
Al-Shabab has said it carried out the attack on 21 September. US Secretary of State John Kerry said the operations in Libya and Somalia showed that the US would never stop "in its effort to hold those accountable who conduct acts of terror".
Read more at BBC News.