Iron Curtain

==== Bulgaria ====
The Yugoslav-Bulgarian border{{efn|Present-day Serbian-Bulgarian and North Macedonian-Bulgarian border}} became closed in 1948 after the [[Tito–Stalin split]]. The area around the border was restructured, with land ownership on both sides no longer legal. Loudspeakers were installed for spreading propaganda and insults. The installations were not as impressive as the one on for example the inner-German border, but they resembled the same system.<ref>{{Cite book |url=https://www.worldcat.org/oclc/1248760000 |title=The Balkan Route: Historical Transformations from Via Militaris to Autoput |date=2021 |others=Vladimir Aleksić, Tatjana Katić, Sandra King-Savić, Matthew Larnach, Dobrinka Parusheva, Florian Riedler, Florian Riedler, Nenad Stefanov, Nenad Stefanov |isbn=978-3-11-061856-3 |location=Berlin |oclc=1248760000}}</ref> In the GDR, there was a long time rumor that the border of Bulgaria was easier to cross than the inner German border for escaping the East Bloc.<ref>{{Cite web |title='The Bulgarian border was extremely dangerous' – DW – 04/11/2019 |url=https://www.dw.com/en/the-bulgarian-border-was-extremely-dangerous/a-48290175 |access-date=2022-12-19 |website=dw.com |language=en}}</ref>

In [[Greece]],<ref>{{Cite web |title=Beyond the Berlin Wall: The forgotten collapse of Bulgaria's 'wall' |date=5 November 2019 |url=https://www.brookings.edu/blog/order-from-chaos/2019/11/05/beyond-the-berlin-wall-the-forgotten-collapse-of-bulgarias-wall/}}</ref> a highly militarized area called the "Επιτηρούμενη Ζώνη" ("Surveillance Area") was created by the Greek Army along the Greek-Bulgarian border, subject to significant security-related regulations and restrictions. Inhabitants within this {{convert|25|km}} wide strip of land were forbidden to drive cars, own land bigger than {{convert|60|m2}}, and had to travel within the area with a special passport issued by Greek military authorities. Additionally, the Greek state used this area to encapsulate and monitor a non-Greek ethnic minority, the [[Pomaks]], a Muslim and Bulgarian-speaking minority which was regarded as hostile to the interests of the Greek state during the Cold War because of its familiarity with their fellow Pomaks living on the other side of the Iron Curtain.<ref>[https://www.dur.ac.uk/resources/ibru/publications/full/bsb7-2_labrianidis.pdf Lois Labrianidis, The impact of the Greek military surveillance zone on the Greek side of the Bulgarian-Greek borderlands], 1999</ref>

The border was dismantled at the end of the 1990s.<ref>{{Cite web |last=Breuer |first=Rayna |title=Dangerous escape: Fleeing the GDR through Bulgaria|date=2019-11-04 |url=https://www.dw.com/en/dangerous-escape-fleeing-the-gdr-through-bulgaria/a-48283254 |access-date=2022-12-19 |website=[[Deutsche Welle]] |language=en}}</ref>
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