The hosts of "Fox & Friends" giggled and gloated over Corey Lewandowski's contentious appearance before the House Judiciary Committee.

President Donald Trump's former campaign manager claimed executive privilege over testimony he gave before special counsel Robert Mueller, admitted he had lied in TV appearances and cracked jokes during five hours of testimony -- and the Fox News hosts were delighted.

"He gave as good as he got," said co-host Steve Doocy.

Co-host Ainsley Earhardt was laughing so hard she could barely speak.

"She said the truth shall set you free," Earhardt said, quoting Rep. Sheila Jackson Lee (D-TX) through guffaws. "'Answer the question,' there was no question."

Saudi Arabia said it will unveil the results later Wednesday of its probe into attacks on key oil installations, as US Secretary of State Mike Pompeo heads to the kingdom to discuss possible retaliation.

Riyadh, which is bogged down in a five-year war against Tehran-aligned rebels in neighbouring Yemen, has said that the weapons used were Iranian-made, but has not directly blamed its arch rival.

However, the Saudi defence ministry said its spokesman would present evidence from the site of the weekend attacks that halved Saudi oil production, sending global energy markets into a tailspin.