Well now. The impeachment inquiry into Donald J. Trump’s presidency has taken yet another decisive turn and it doesn’t look good for the president.

William Taylor, a career diplomat, a West Point grad, an infantry officer with combat experience in Vietnam, someone with 50 years of public service under his belt has testified that Donald Trump did seek a political favor from a foreign government.

On the other side is Trump, a president, a man with zero public service experience, no national security experience, a serial liar, a novice who doesn’t the first or second thing about diplomacy denying the existence of a “quid pro quo” with Ukraine.

Who should we believe? I am going to go with the first fellow, Ambassador Taylor.

Taylor is a top U.S. envoy to Ukraine. He has been at or near the center of what has gotten Trump into so much political trouble. He reportedly told a congressional committee that Trump did indeed seek a political favor from Ukraine. He said Trump did seek to withhold military assistance until Ukraine provided dirt on Joe Biden and his son, Hunter; oh yeah, Biden might run against Trump for president in 2020.

My head is spinning.

If there can be a more decisive moment in this impeachment inquiry to date, I am hard-pressed to identify it.

William Taylor is credible. Donald Trump is not.