Kenyan authorities are reviewing their security strategy following explosions and gunfire in the capital, Nairobi. There are conflicting figures with some sources putting the figure at 15. In yesterday's attacks, four men stormed a hotel complex with explosives and bullets, sending by-standers diving for cover and trapping civilians inside. Al-Shabaab miliant group, which carried out an attack a notorious assault on a Nairobi shopping mall, has claimed responsibility for the attack. More than 100 civilians were rescued in the middle of the night. The attack happens exactly three years since more than 100 Kenyan soldiers died inside Somalia in their military camp when they were ambushed by al-shabaab militants.