The Islamic State militant group ISIS has claimed responsibility for a knife attack that killed three people and wounded eight more at a crowded festival marking Solingen, Germany’s 650th anniversary.

On this week’s episode of “The Hunt with WTOP National Security Correspondent J.J. Green,” Hans-Jakob Schindler, senior director of the Counter Extremism Project, suggests ISIS on the rise again in Europe and beyond.

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The Associated Press contributed to this report.