The U.N. Security Council condemned the recent escalation of attacks by the Nigerian extremist group Boko Haram on Monday and expressed deep concern that its activities are undermining peace and stability in central and west Africa. The statement was sponsored by Nigeria, which had been reluctant to have the council discuss the Islamic militant group despite being a member of the Security Council. The Security Council has previously responded to specific terrorist acts by Boko Haram with press statements that do not become part of its official record. The militant group seeks to impose Islamic Shariah law across Nigeria, Africa's...