This segment on Crowdstrike and “the server” was excellent:
Even after the acquittal of the president, his lawyer, Rudy Giuliani, is pursuing allegations of corruption in Ukraine. This past week, Attorney General William Barr said the Justice Department would “carefully scrutinize” what Giuliani finds. Last July, President Trump made the phone call to Ukraine that led to impeachment. He asked the president of Ukraine to investigate a mysterious Democratic National Committee computer server that Mr. Trump said was hidden in Ukraine. We have found that odd request is a story that has grown over the years and was influenced by Moscow. You may have wondered how the president was impeached over Ukraine of all places. The answer is in the story of the mystery server, a reminder that the U.S. and Russia have been on opposite sides of a war in Ukraine since Russia’s invasion in 2014.
You can see the whole thing, here. If anyone who doesn’t follow this stuff closely was watching last night they learned something important.