President Donald Trump escalated his attacks against the anonymous whistleblower at the center of the Ukraine call controversy that could soon see the U.S. leader impeached. The president’s comments came on Sunday, just a day after the whistleblower’s lawyer warned that the president’s earlier remarks were already putting their client’s “personal safety” at risk. In a letter addressed to Joseph Maguire, the acting director of National Intelligence, the anonymous whistleblower’s lawyer, Andrew Bakaj, warned on Saturday that Trump’s public outrage over the whistleblower’s report had already created “serious concerns for our client’s personal safety.” “The events of the past week have heightened our concerns that our client’s identity will be disclosed publicly and that, as a result, our client will be put in harm’s way,” Bakaj said of the whistleblower, who flagged concerns around Trump pressuring Ukrainian President Volodymyr Zelensky to investigate 2020 presidential candidate Joe Biden and his son in a July phone call. Of particular alarm, the lawyer said, were Trump’s comments ...