The same idea crossed my mind. Those embassies are chock full of magical equipment, US embassies sometimes have radio-transparent walls for unspecified reasons ( https://en.wikipedia.org/wiki/Embassy_of_the_United_States,_... )

The only commonality of the cases (in Cuba, China, Australia, Washington) is that all the victims were Government employees.

My take is, like yours, that all the cases are industrial injuries. Much better for the Government to blame 'adversaries' than to be on the hook for possibly millions of dollars in Workers' Compensation payouts.

I wouldn't even be surprised. Like a 500W transceiver using encrypted radio signals by the sides of their bed. The boss says "you better keep an eye on this thing, even in your sleep!" - and all the high ranking officials keep their communications device right next to their heads as they sleep.