{"version":"1.0","provider_name":"AlliiertenMuseum","provider_url":"https:\/\/www.alliiertenmuseum.de","author_name":"phoebegenschow","author_url":"https:\/\/www.alliiertenmuseum.de\/author\/phoebegenschow\/","title":"Special Exhibition on the Berlin Espionage Tunnel - AlliiertenMuseum","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"69Qtjk94F0\"><a href=\"https:\/\/www.alliiertenmuseum.de\/en\/ausstellung\/special-exhibition-the-berlin-espionage-tunnel\/\">Special Exhibition on the Berlin Espionage Tunnel<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.alliiertenmuseum.de\/en\/ausstellung\/special-exhibition-the-berlin-espionage-tunnel\/embed\/#?secret=69Qtjk94F0\" width=\"600\" height=\"338\" title=\"&#8220;Special Exhibition on the Berlin Espionage Tunnel&#8221; &#8212; AlliiertenMuseum\" data-secret=\"69Qtjk94F0\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n<\/script>\n","thumbnail_url":"https:\/\/www.alliiertenmuseum.de\/wp-content\/uploads\/2021\/06\/2.0-alliierten-museum-sonderausstellung-spionagetunnel.jpg","thumbnail_width":2000,"thumbnail_height":1328,"description":"Units of the Soviet army stationed in the GDR discovered the Berlin espionage tunnel in April 1956. It ran from Neuk\u00f6lln\/Rudow in the American Sector to Treptow\/Altglienike in the Soviet Sector. The tunnel was a joint operation of the American and British intelligence services. Its objective was to tap the telephone lines linking Soviet military headquarters with Moscow. The tunnel operated for 11 months before its spectacular discovery. Some 440,000 telephone calls were recorded during this period. The construction of the tunnel, which was approximately 450 metres long, and the bugging technology used, made the Berlin espionage tunnel an outstanding episode in the history of the Cold War."}