Issues raised in Trump impeachment reflect a management style that has rattled cybersecurity policy

In September 2019, reports emerged about a government whistleblower from the intelligence community, a phone call between President Trump and the leader of Ukraine, and the U.S. president allegedly withholding military aid to an ally in order to further his own political interests.

It had nothing to do with cyber or the 2016 election -- the focus of special counsel Robert Mueller's earlier, high-profile investigation -- but this latest affair would propel the House into an actual impeachment inquiry against...