Al-Shabaab is claiming that there are American gunmen among those still holed up in the Westgate mall in a standoff with Kenyan and Israeli special forces. The Somali al-Qaeda affiliate tweeted a series of names on its latest account before Twitter against suspended the group. Al-Shabaab has been creating new accounts each time they get shut down but a movement of pro-Kenyan tweeters has been tracking down the new accounts and complaining to Twitter. “We received permission to disclose the names of our mujahideen inside #Westgate,” their latest account tweeted. They proceeded to tweet the names one by one, including...