What is 'Obamagate'? Everything you need to know about Trump's latest Twitter meltdown

Trump’s coronavirus response has ranged from the willfully ignorant to the outright dangerous.

Former President Barack Obama called the Trump administration’s handling of the Covid-19 crisis an “absolute chaotic disaster” on a private conference call over the weekend, criticising how Trump has handled the challenges of coronavirus lockdown and calls for states to re-open.

But Trump still seems to be obsessed with the results of the Russia investigation.

During the phone call, Obama also discussed the case of Michael Flynn, Trump’s former national security adviser – the justice department in the US said it would be dropping charges against Flynn last week.

Flynn was fired by Trump after it emerged he had lied to VP Mike Pence about conversations with the Russian ambassador on Obama-era sanctions.

Obama criticised the fact that charges against Flynn had been dropped.

Trump popped over to Twitter to accuse Obama of committing the “biggest political crime in American history, so far” referring to a tweet sent by a conservative talk show host, who claimed that Obama had used the end of his presidency to sabotage Trump’s incoming administration.

Trump continued to tweet about conspiracy theories and other kinds of anti-Obama sentiment, including a tweet which just said "OBAMAGATE!".

It implied that Obama was linked to the FBI's decision to investigate Flynn. Flynn pleaded guilty to lying to Robert Mueller, who was heading the FBI investigation.

Details from Obama's private conference call on Saturday were reported over the weekend.

The call was meant to encourage former Obama staffers to work for former VP and current presidential candidate Joe Biden.

Obama also said that the current US administration's response to the coronavirus crisis is also a reminder of why a strong response from the US government, to international incidents, is necessary.

During the call, Obama also pointed out that even though the pandemic would have been bad even with the best of governments, this government had made the situation worse.

Trump seemed to respond on Twitter by saying that his administration was "getting top marks" for its handling of the Covid-19 response, and compared it to the response to swine flu, or H1N1 in 2009 from the Obama administration.

Trump went on to retweet praise for himself, memes about Obama, a viral video showing someone helping an old man from a parking intersection and other articles about the FBI's investigation.

Totally normal behaviour.