In Kenya, armed men burst into an upscale hotel complex in the capital Nairobi Tuesday, killing 14 people and launching a hostage crisis that stretched on for nearly a day. The Somalia-based militant group al-Shabab claimed responsibility for the attack. In 2013, a similar assault by al-Shabab killed at least 67 people at a Nairobi shopping mall. Last year, the Trump administration targeted al-Shabab with an unprecedented number of airstrikes across Somalia.