http://www.washingtonpost.com/blogs/the-switch/wp/2017/11/13/heres-why-att-and-the-justice-department-are-at-odds-over-time-warner/

Last week, many were caught off-guard by reports that AT&T's massive bid for Time Warner had hit a rough patch. In a matter of days, the $85 billion acquisition went from looking like a done deal to something much less certain, with the Justice Department and AT&T seemingly at loggerheads and possibly headed toward a lawsuit. In the middle of it all was a fierce disagreement over the future of CNN, a frequent target of President Trump's criticism and a Time Warner property.

So what happened? Why did the deal hit a snag? Here's a basic explanation on it all to get you up to speed.