If Jeff Sessions goes the way of Michael Flynn it'll paint a deeply troubling picture for Donald Trump, according to political expert Scott Lucas.
The academic spoke to Julia Hartley-Brewer after it was confirmed that Sessions, Mr Trump's attorney general, met Russia's ambassador twice during the election campaign.
Sessions previously told Congress he had no contact with Russian representatives during the campaign, and many are urging him to step down - just weeks after Flynn, Mr Trump's national security advisor, resigned over his own dealings with Russia.
Lucas, professor of international politics at Birmingham University, told Julia that if losing one advisor is "unfortunate" for Mr Trump, losing another is "beginning to look like more than carelessness."
Lucas says the issue boils down to a simple question: "Did Sessions talk to the Russian ambassador about anything connected with the alleged Russian [election] interference?"
Listen to the full interview above