Al-Qaida chief Ayman al-Zawahiri, November 10, 2001.
A purported message from al-Qaida chief Ayman al-Zawahiri calls for a campaign of guerrilla warfare against foreign troops in Somalia.
The alleged message from Zawahiri appeared Tuesday on the website of Somali militant group al-Shabab, which is fighting African forces that support Somalia's government.
The speaker,...