Spanish King Felipe VI gives a speech during the ceremony to mark the 17th European Day of Remembrance of the Victims of Terrorism in Madrid, Spain, on March 11, 2021. Europe on Thursday commemorated those who lost their life to terrorism with a solemn ceremony in Madrid, the capital of Spain. (Xinhua/Meng Dingbo)

Spanish King Felipe VI gives a speech during the ceremony to mark the 17th European Day of Remembrance of the Victims of Terrorism in Madrid, Spain, on March 11, 2021. Europe on Thursday commemorated those who lost their life to terrorism with a solemn ceremony in Madrid, the capital of Spain. (Xinhua/Meng Dingbo)

Spanish King Felipe VI gives a speech during the ceremony to mark the 17th European Day of Remembrance of the Victims of Terrorism in Madrid, Spain, on March 11, 2021. Europe on Thursday commemorated those who lost their life to terrorism with a solemn ceremony in Madrid, the capital of Spain. (Xinhua/Meng Dingbo)