
Flags fly at half-mast at the Presidential Palace in Warsaw, Poland, Nov. 9, 2026. Six people were killed and 16 others injured in a shooting in central Krakow, Poland, Nov. 7, 2026. President Karol Nawrocki declared Sunday and Monday days of national mourning. (Xinhua/Yue Yuanyuan)

A Polish national flag flies at half-mast at the Royal Castle in Warsaw, Poland, Nov. 9, 2026. Six people were killed and 16 others injured in a shooting in central Krakow, Poland, Nov. 7, 2026. President Karol Nawrocki declared Sunday and Monday days of national mourning. (Xinhua/Du Zhiqian)