Without much conviction, the CIA says it now thinks the Covid pandemic started with a lab leak rather than an infection from a market in Wuhan.
Some scientists have admitted giving the lab leak theory a wide berth because it was always Donald Trump's preferred explanation for the pandemic and he gave it a bad name.
Others note no firm evidence of a leak from the Wuhan Institute of Virology or any other lab has come to light.
That doesn't mean no such thing exists, but the CIA's new assessment is not based on new information.
It was announced "with low confidence" by the agency's new director (a Trump appointee) but commissioned by its old one, William Burns.
Some Republican senators now want China to compensate the US for the pandemic, in which 7 million died.