Idioms and Phrases are far widely used in News papers to present the points crisply. They drive the ideas of the author in a better way and with few words. What they convey can be conveyed by other words, but only with lengthy sentences and with more words. In order to make the sentences short with few words, these idioms are usually used by all those who have a very good command over English language. You have to acquire command over English before you start practising these idioms. Wrong idiom in wrong context will twist the meaning of the sentence which you wan to write. So, be careful with the usage of these idioms.