GAZA, Dec. 8, 2021 (UNI/Xinhua) -- The undated photo shows a portion of the high-tech barrier around the Gaza Strip. Israel announced on Tuesday the completion of a high-tech underground wall around the Gaza Strip aimed at preventing militants from entering the country.

OGRE, Dec. 8, 2021 (UNI/Xinhua) -- Photo taken on Dec. 7, 2021 shows the winter landscape in Ogre, Latvia.

KUWAIT CITY, Dec. 8, 2021 (Xinhua) -- Artists perform a folk dance during an Indian art show in Kuwait City, Kuwait, on Dec. 7, 2021.

BRUSSELS, Dec. 8, 2021 (UNI/Xinhua) -- A woman prepares to receive test at a COVID-19 test center in Brussels, Belgium, Dec. 7, 2021. Hans Kluge, the WHOs regional director for Europe, on Tuesday urged governments and citizens in Europe to take immediate action to halt the spread of the COVID-19 pandemic by implementing five pandemic stabilizers to keep the mortality rate down.

BEIJING, Dec. 8, 2021 (UNI/Xinhua) -- Swans are pictured on the Qingshui river in Miyun District of Beijing, capital of China, Dec. 7, 2021.