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In reply to the discussion: The game is over. Even Andrew Sullivan has jumped ship of the NSA and GCHQ. In Greenwald's defense [View all]stevenleser
(32,886 posts)Thank you for correcting me on bf vs spouse. I will not make that error again.
In the UK, you are subject to airport security searches when you change aircraft. I found that out the hard way once when I missed a connecting flight in Heathrow due to having to go through security again. Once you are under the control of a particular country's airport airside, you are subject to any searches and detention they want to make unless you for some reason have diplomatic immunity. Being a journalist or friend or spouse of a journalist does not confer that immunity.
Snowden, for instance, found that he could not leave the airport airside at Sheremetyevo airport until Russia gave him leave to enter. He had no right to refuse being searched while there. He was utterly subject to Russia's customs, immigration and border control policies.
If you are thought to be trafficking in stolen goods or espionage, you will be detained and searched and if contraband is found you will be subject to arrest.