Could be a possibility, although slim, that the building was taken down by Iranians as revenge for the nuke site bombings.
Going by reports there were a lot of Jewish in the building. Might be a VIP was targeted.
DWS deep in Awan stuff. Awan is Pakistani, but still. If DWS is major comped by Awan, and she can't protect Jewish constituents in her district because of it, she's cooked. The Iranians, via Awan, are going to go into her district to do shit if she's blackmailed, and she'll have to lead any cover up of the truth. Nice double dip for Awan. Hush money from DWS and payment for "services rendered" from the Iranians.
Slim chance, but who knows anymore?