Kim's Recent Essays...
US International Broadcasting: Success Requires Independence and Consolidation.
In International Broadcasting, Even the Static Must be Credible.
America Calling China: A Strategy for International Broadcasting.
At present, a US idea "about the contours of freedom of expression" is the Smith-Mundt Act ban on the domestic dissemination of US public diplomacy and international broadcasting. Twitter's new capability allows this law to be observed. Even if all USIB content is blocked to US IP addresses, many of remaining USIB shortwave broadcasts will be audible in the United States. That is, until those transmissions end. When that happens, enforcement of the domestic dissemination ban will be complete.