Carnival celebrations kick off in Germany amid security concerns:: Cologne, Germany::The biggest carnival parade took place in Cologne with tens of thousands of carnival revelers watching from the sidelines.

Revelers take part in the Rose Monday carnival parade in Cologne, Germany, March 3, 2025. Rose Monday is the biggest one of its kind held during the annual carnival season in this city of historical heritages. (Xinhua/Zhang Fan)

Ukrainian President Volodymyr Zelenskyy and Russian President Vladimir Putin

Germany's largest Carnival parade on Shrove Monday, known in Germany as Rose Monday, kicked off in the western German city of Cologne on Monday morning. This year's festivities come amid a tense security situation following a string of deadly attacks in recent months,