The Tianjin Explosion was most certainly a nuke. Forget the CGI nukes you seen on Hollywood movies. That is all fake. The tell tale sign of a real nuke is white scintillating dots as the CCD elements go into over-exposure. This is caused by radiation super heating debris white hot to over 50,000 degrees.
This was not a gas plant or chemical factory as some have falsely reported. The explosion originated from a shipping container storage yard.