By William Tucker
When Kenyan forces invaded southern Somalia several months ago, the stated goal was to create a buffer to prevent al-Shabaab’s forces from launching attacks against Nairobi. Al-Shabaab, however, continues to threaten Kenya. In one statement an al-Shabaab spokesman threatened to knock down skyscrapers in Nairobi. Al-Shabaab does have the capability to carry out attacks beyond Somalia, but the scale would be much smaller than toppling large buildings.