Washington Post on how Trump allies "fanned a political storm" in Ukraine

A Washington Post article titled "Holding Ukraine hostage: How the president and his allies, chasing 2020 ammunition, fanned a political storm" examines how President Trump's allies were involved in the Ukraine controversy. One of those allies is Ambassador Gordon Sondland, whom the president blocked from testifying in Capitol Hill today. The Washington Post's Paul Sonne joined CBSN to talk about his reporting.