The question whether the source of the coronavirus that led to deaths of more than 1 million Americans is a lab leak at a Wuhan lab in China is still being checked. The Energy Department says that with "low confidence" it emerged from a lab leak at Wuhan, China. Earlier in 2021 the FBI stated that it was the result of a lab leak not a natural transmission. The Energy Department runs many labs doing research in the field. Petroleum exports supported the allied war effort in two world wars says this report in the WSJ. Europe is shunning Russian oil after its invasion of Ukraine.