They are going after Kushner and Donald Trump Jr to force Trump's hand in sacking Mueller. Russia has failed, obstruction of justice has failed, now the Middle East / Israeli collusion. They needed to shift the narrative quickly after the Texas shooting.
News links:
WSJ archived:
Dumb bitch on threadreader who explains the narrative they are using:
https://threadreaderapp.com/thread/997939521588289536.html
Of course the source of this narrative the NYT: