Europe Faces Continuing Terror Threat\, While Concerns in U.S. Ebb

Europe Faces Continuing Terror Threat, While Concerns in U.S. Ebb, Study Finds

Much U.S. security planning has moved on to challenges from China and Russia, think tank says

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WASHINGTON—U.S. allies in Europe face a continuing “significant threat” of terrorist attacks from Islamic extremists, even as terrorism is taking a back seat in U.S. security planning that increasingly focuses on challenges from China and Russia, according to a report due for publication this week.

“The threat of attacks from groups like the Islamic State and al Qaeda to U.S. allies like the United Kingdom and France is at one of the highest levels” since the Sept. 11, 2001, attacks, said the report, written by scholars at...