It is not necessary to lie. All you need is to be selective about what truths you tell, and where. Some goes on the front page, some on page 13, other bits nowhere at all.
Hans Blix's UN reports, before the invasion, about Iraq's entire lack of any WMD whatsoever were too important to completely ignore, but were easy enough to bury in a back page. The entire lack of any primary source information indicating Russian interference in the 2016 election was easy to avoid mentioning anywhere.