[ti:] [ar:] [al:] [00:00.00]Thousands of people, many visibly shocked, [00:02.72]have gathered outside of the presidential palace [00:04.71]in the Polish capital Warsaw [00:06.02]after President Lech Kaczynski [00:07.88]and dozens of top officials were killed [00:09.50]in a plane crash in western Russia. [00:11.00]The Prime Minister Donald Tusk [00:12.92]called the crash the most tragic event [00:15.22]in Poland's recent history. [00:16.53]The plane came down in a forest [00:18.27]as it's trying to land in fog at Smolensk airport. [00:20.76]There were no survivors. [00:22.19]Adam Easton reports from Warsaw. [00:24.56]Thousands of people gathered outside the presidential palace [00:27.29]in Warsaw in a spontaneous show of mourning. [00:30.78]Families, young and old, brought flowers. [00:33.95]Others lit candles. [00:35.44]The pavement in front of the building [00:37.25]is carpeted with flickering flames. [00:39.36]The scale of the disaster is unprecedented - [00:42.41]not just the president, [00:44.09]but most of the commanders of the armed forces, [00:46.33]many leaders from the country's main opposition party [00:49.06]and senior state and church officials died in the crash.