In the news this morning, the US has dropped the largest non-nuclear bomb in history. On Thursday, US military dropped a 21,000 lb bomb with 11 tons of explosives on Afghanistan. The target was an ISIS tunnel complex. The direct impact area of the bomb is one square mile, and the explosion could be felt like an earthquake 15 miles away. The bomb's nickname is the 'Mother of All Bombs'. President Trump described the strike as a very successful mission. With 15,000 US troops in the region, the war in Afghanistan has been going on for 15 years, the longest in US history.