An erstwhile close friend of Joe Biden, Senator Lindsey Graham is now leading a frontal political assault on the incumbent president.

The South Carolina Senator once stood shoulder-to-shoulder with Biden as a senator and continued to do so when the latter became Barack Obama’s Vice President. It seems, however, that time and hopes of political gains have caught up with their friendship.

The Republican commented on the current chaos enveloping the US troops' retreat from Afghanistan, calling for Biden to be impeached in an interview with CBS.

Graham told the news channel that Biden should be the fourth president the Congress tries to remove, despite the fact that Democrats hold majority which nullifies any serious prospects of impeachment.

The senator statements are part of a larger Republican campaign to inflict damage on the President as they gear up for midterm elections next year. Yet what remains to be true is the fact that Graham adopted some seriously invective vernacular against Biden:

“I don’t think he got bad advice and took it. I think he ignored sound advice. And this is Joe Biden being Joe Biden. He’s been this way for 40 years… I think the best you could describe is dereliction of duty at the highest level.”

Graham’s comments come amidst a plethora of criticism directed towards Biden’s exit strategy from Afghanistan, with the attack on Kabul airport last Thursday killing hundreds of Afghans and 13 US soldiers. The US retaliated on Sunday by drone striking a car it claims to harbor an ISIS-K suicide car bomber, but all reports indicated thus far that a family of six were murdered by the strike.

Three children, including a two-year-old, were amongst the victims.

Coincidentally, Biden’s reception of the 13 dead soldiers sparked outcry as he glanced at his watch mid-ceremony, a moment in which he showcased a complete disregard for the emotions of the attendees.

For now at least, it seems that the bipartisan friendship is put on hold as the rift between the two parties grows larger every day.