There was a rise in Islamic terrorist incidents in Europe after 2014. The years 2014–16 saw more people killed by Islamic terrorist attacks in Europe than all previous years combined, and the highest rate of attack plots per year. Most of this terrorist activity was inspired by ISIL, and many European states have had some involvement in the military intervention against it. A number of plots involved people who entered or re-entered Europe as asylum seekers during the European migrant crisis, and some attackers had returned to Europe after fighting in the Syrian Civil War. The Jewish Museum of Belgium shooting in May 2014 was the first attack in Europe by a returnee from the Syrian war.