The whole article is phrased with the assumption that the U.S. government is unquestionably on the side of democracy and free speech: it's benevolence implicit and accepted.
But that's hardly true, specially in light of recent events: when it comes to dictatorships and internet freedom, the U.S. is the first to hand them pliers and wire cutters.
Alternatively, one could transmit GSM and G3/GPRS signals, masquerading as legitimate mobile providers.
What's interesting is that the US didn't use radio jamming during the Iraq or Afghanistan campaigns. Have capabilities improved to such a point that an entire country could be blanketed by radio-frequency jamming signals?
Kind of like with GPS signals - our military could (and occasionally does) jam those signals during a conflict, but we rely on it so much that it's more useful to keep it working.