The incredibly broad Russia imbroglio shows no signs of stopping in 2018. A look at four big storylines in the new year and what directions the stories may take.

Trump's former campaign chairman and a top aide are charged with money laundering; a former foreign policy aide has pleaded guilty to lying to FBI.

A lawyer for Donald Trump has acknowledged he reached out to Russian President Vladimir Putin's office to ask for help with a putative Trump Tower project in Moscow during the presidential campaign — but says nothing came of it. The concession gives new insight into the workings of Trump's business and the potential paths for special counsel Robert Mueller's investigations.

After months of deliberation, a reluctant president is expected to increase the American military presence by about 4,000 troops after 16 years of war with no end in sight.

One day, the president signed a bill sanctioning Russia and acknowledged interference in the 2016 election. The next day, he told supporters in West Virginia "the Russia story is a total fabrication."

Vice President Pence wraps up a trip Wednesday to Estonia, Georgia and Montenegro. Pence has spent the four-day trip speaking out against Russia and affirming U.S. support for the tiny nations.

President Trump surprised the military-industrial-congressional complex with a post on Twitter regarding banning transgender troops — even though they already serve openly now.

Outspoken defense hawk. Informal diplomat. Vietnam War hero. The seemingly indestructible McCain has been a pillar of Washington for decades. What could it mean if he does not return?

Trump Jr. revealed a lot in disclosing an email thread that described Russia's offer of help to his father's campaign — but he also raised many other questions about the story.

President Trump may have saved himself and the government a lot of trouble by pulling the plug on a joint cyber unit with Russia before work got seriously underway.

How could an advanced combatant crash into a container ship in the middle of the ocean? Investigators begin to look for clues about what happened.

Members of Congress have more big hearings planned at which current and former U.S. officials are set to talk about Russian interference and the integrity of state election systems.

Attorney General Jeff Sessions is set to appear before members of Congress amid a war of credibility between the administration and former FBI Director James Comey.

James Comey is expected to tell Congress that, yes, he did tell President Trump he wasn't under investigation — but that Trump asked him to back off Mike Flynn.

The appearance of a National Security Agency report about Russian cyber-mischief adds new detail about what American spies know — but it also highlights much of what still isn't clear.

The document indicated that Russia's military intelligence agency launched a cyberattack shortly before Election Day 2016 on a U.S. company that provides voting services and systems.

Russia's GRU intelligence agency targeted an American provider of election services, The Intercept says; a U.S. intelligence contractor was charged with revealing a secret report about the scheme.

Russia's interference in the 2016 election is part of a tradition of mischief that goes back centuries — and remains pernicious, leaders warn. Tuesday ex-CIA Chief John Brennan testified on the topic.

Intelligence stories come with a lot of special lingo and terms of art which can make them a little intimidating if you haven't been following closely. NPR looks at some of the key phrases in the intelligence world to help take a look behind the headlines.

There's a lot more going on in the shadowy world of America's spies than just the controversy over the abrupt dismissal of James Comey as director of the FBI.