Why the Trump-Russia investigation may continue for years

It took investigators two years to break Watergate, and six years to uncover Iran-Contra, writes Tim Weiner. There is no guarantee the probe into Russia and the 2016 election will move any quicker

Donald Trump wants the issue of Russian influence in the 2016 election to vanish. He has called it “a hoax” in his tweets.

But it’s not a hoax. It’s real — and might take years to resolve.