{"version":"1.0","provider_name":"Polen Travel (NL)","provider_url":"https:\/\/www.polen.travel\/nl","author_name":"magdalenastoch","author_url":"https:\/\/www.polen.travel\/nl\/author\/magdalenastoch\/","title":"De Poolse Ondergrondse Staat 1939-1945 - Polen Travel (NL)","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"0Oq5qdXr6e\"><a href=\"https:\/\/www.polen.travel\/nl\/de-poolse-ondergrondse-staat-1939-1945\/\">De Poolse Ondergrondse Staat 1939-1945<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.polen.travel\/nl\/de-poolse-ondergrondse-staat-1939-1945\/embed\/#?secret=0Oq5qdXr6e\" width=\"600\" height=\"338\" title=\"&#8222;De Poolse Ondergrondse Staat 1939-1945&#8221; &#8212; Polen Travel (NL)\" data-secret=\"0Oq5qdXr6e\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\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\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/www.polen.travel\/nl\/wp-content\/uploads\/sites\/23\/2026\/05\/MuzeumPowstaniaWarszawskiego-waski.jpg","thumbnail_width":1170,"thumbnail_height":500,"description":"Iedereen kent de Franse R\u00e9sistance of de partizanen in Joegoslavi\u00eb. Maar de geschiedenis van het Poolse verzet is veel minder bekend. En dat terwijl juist in Polen een van de best georganiseerde ondergrondse verzetsbewegingen van Europa bestond, waaraan honderdduizenden mensen actief deelnamen."}