Well, the gain of function research was taking place at Wuhan -- and partially on America's dime since Fauci approved the funding via a third party -- to cover his trail. I'm not sure I like GofF research, but I get the logic. As to "accident", do you mean accidentally released from lab? Sure, could be. But, anything you get thru the efforts of the CCP will be a complete pack of lies. It's like an Islamic Jihadi, the Koran gives them the direct permission to lie to infidels if it furthers the cause. Ditto with commies like the CCP. Do I think the lab deliberately released it? Nope. Too dangerous. Their deliberate release will be one more deadly and only after they have immunized much of their population with a REAL vaccine.
The only way to force anything out of them is for all affected countries to sue them in international court and put the onus on them to prove they did not release. Proving a negative? Yep. Tough.