Robin Simcox, Fellow at The Heritage Foundation,has published a report on the statistics about asylum seekers and terrorist events in europe in past years.
Based on this report, Almost 1,000 people have been injured or killed in terrorist attacks featuring asylum seekers or refugees since 2014. Over the past four years,
16 percent of Islamist plots in Europe featured asylum seekers or refugees.
ISIS has direct connections to the majority of plots, with Germany
targeted most often, and Syrians more frequently involved than any
other nationality. Nearly three-quarters of plotters carry out, or have
their plans thwarted, within two years of arrival in Europe.
This report says that, Radicalization
of plotters generally occurred abroad although in the most recent
plots, more commonly within Europe itself.
In conclusion, Simcox believes that, Europe’s response to
migration flows has been inadequate and inadvertently increased the
terrorist threat dramatically. European leaders must acknowledge the
mistakes of the past and control the refugee flow strictly in the future.
Full text of this report is accessible in here.