Boy Genius Report is reporting that sounds played by the phone are immediately followed by some sort of extremely high-frequency tone -- the kind little kids and the next door neighbor's dogs hear, but you may not.
The intervention of specialists becomes harder today because high-frequency trading algorithms are extremely explicit and are largely devoid of such considerations of civic duty.
In fact, given the frequency with which high-profile Western politicians talk about expanding the alliance, the Russians would be extremely foolish not to take NATO expansion seriously.