The Washington Post reports the U.S. military carried out a counterterrorism strike Monday against leaders of the militant group al-Shabab in Somalia, Pentagon officials said, although it was unclear whether the operation was successful. Journalists in Somalia reported that suspected U.S. drones fired missiles near the port city of Barawe, a stronghold for al-Shabab. In a rare acknowledgment of its clandestine military activities in Somalia, the Pentagon said it had conducted a counterterrorism operation there but gave no details. “We are assessing the results of the operation and will provide additional information as and when appropriate,” Rear Adm. John Kirby, the Pentagon press secretary, said in a statement late Monday. The Pentagon statement did not say whether the operation was limited to drone strikes or whether U.S. commandos had been present on the ground.