Via the New York Times!!! http://www.nytimes.com/2013/11/10/us/politics/obamas-portable-zone-of-secrecy-some-assembly-required.html
WASHINGTON — When President Obama travels abroad, his staff packs briefing books, gifts for foreign leaders and something more closely associated with camping than diplomacy: a tent.
President Obama stowed his BlackBerry, which is specially encrypted, while stepping off Marine One on Friday.
Even when Mr. Obama travels to allied nations, aides quickly set up the security tent — which has opaque sides and noise-making devices inside — in a room near his hotel suite. When the president needs to read a classified document or have a sensitive conversation, he ducks into the tent to shield himself from secret video cameras and listening devices.
American security officials demand that their bosses — not just the president, but members of Congress, diplomats, policy makers and military officers — take such precautions when traveling abroad because it is widely acknowledged that their hosts often have no qualms about snooping on their guests.
The United States has come under withering criticism in recent weeks about revelations that the National Security Agency listened in on allied leaders like Chancellor Angela Merkel of Germany. A panel created by Mr. Obama in August to review that practice, among other things, is scheduled to submit a preliminary report this week and a final report by the middle of next month. But American officials assume — and can cite evidence — that they get the same treatment when they travel abroad, even from European Union allies.
More at link.
Not a whole lot new. SOP for travel, but the source is surprising.