In United States, emergency crews struggled to contain deadly wildfires that have scorched hundreds of square miles of land in four States and forced thousands of people to flee their homes ahead of the wind-whipped flames.<br/><br/> <br/><br/>The fires were burning in parts of Kansas, Oklahoma, Texas and Colorado, and warnings that fire conditions were ripe were issued for Iowa, Missouri and Nebraska, as powerful thunderstorms moved through the nation's midsection overnight, spawning dozens of tornadoes, according to the National Weather Service. The fires have killed at least five people.<br/><br/> <br/><br/>More than 70 firefighters from 13 departments battled the blaze, which was reported east of Sterling on Monday morning.