I have not seen the WSJ article but I read the report now . I am sure it will surface pretty soon as it was sent to 193 States and not all of them have clear policies to keep things out of the media. . It does not apportion any blame but reading between the lines you can see where the loopholes were everyone involved has some degree of responsibility, no one really comes out clean except the crew that was clearly a victim, procedurally let down by its own airline at a crucial moment they needed to communicate with them . the Belarus authorities have an excuse for everything but not much is convincing as they refused to provide any evidence ( e.g CCTV cameras recordings, telephone records etc..)
Number of International agreements and conventions were not adhered to by Belarus and Poland ( the State of registry of the aircraft ) is bringing this to court.
One thing debunked is the Belarus Mig 29 interception that clearly did not occur, even the Social media video "proving it " and used in this Forum here , was a fake one.( taken over Lithuania after the event) One more reason to treat social media videos with extreme care .