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Keith Kellogg. Photo: Drew Angerer/Getty Images

Lt. Gen. Keith Kellogg, who serves as national security adviser to Vice President Pence, rebuked his colleague Jennifer Williams' claim that the call between President Trump and Ukrainian President Zelensky was "inappropriate" in a statement on Tuesday.

What he's saying:

"I was on the much-reported July 25 call between President Donald Trump and President Zelensky. ... I heard nothing wrong or improper on the call. I had and have no concerns. Ms. Williams was also on the call, and as she testified, she never reported any personal or professional concerns to me, her direct supervisor, regarding the call."
— Keith Kellogg
  • "In fact, she never reported any personal or professional concerns to any other member of the Vice President’s staff, including our Chief of Staff and the Vice President," Kellogg added.

Context: Williams, an aide to Pence on Europe and Russia, said she deemed the conversation between Trump and Zelensky "unusual and inappropriate," according to a transcript from her recent closed-door testimony.

  • Williams noted she is unaware of any evidence of wrongdoing by former Vice President Joe Biden in Ukraine in her public testimony on Tuesday.
  • She added that she does not identify as a "Never Trumper," despite an attack from the president calling her such.

Go deeper:

Go deeper

Cyberattack forces shutdown of major U.S. fuel pipeline

A police officer stands guard inside the gate to the Colonial Pipeline Co. Pelham junction and tank farm in Pelham, Alabama, in 2016. Photo: Luke Sharrett/Bloomberg via Getty Images

A major U.S. fuel pipeline running from Texas to New York has been taken offline by its operator because of an apparent cyberattack.

The big picture: Colonial Pipeline "carries 45 percent of the East Coast’s fuel supplies," the N.Y. Times reports.

Bryan Walsh, author of Future
1 hour ago - Health

The end of quarantine

Illustration: Annelise Capossela/Axios

Long quarantines were a necessary tool to slow the COVID-19 pandemic during its first phases, but better and faster tests — plus vaccines — mean they can be scaled back considerably.

Why it matters: Quick tests and regular surveillance methods that identify who is actually infectious can take the place of the two-week or longer isolation periods that have been common for travelers and people who might have been exposed to the virus, speeding the safe reopening of schools and workplaces.

Amazon rollups are the hottest deals

Illustration: Aïda Amer/Axios

A new generation of companies is forming to scoop up Amazon marketplace sellers — and venture capital firms are writing big checks to support the effort.

Why it matters: These e-commerce aggregators are all about data and using it to optimize and turbocharge sales, which means they’re using Amazon’s own playbook.