By BI: In early September, an unnamed ISIS operative confirmed that an estimated 4,000 covert ISIS terrorists had arrived in Europe disguised as refugees.

“Among the refugees, who went to Europe, maybe more than 20 percent belong to ISIS groups. Now Europeans (and other Western nations) have invited this threat into their homelands. It will only get much worse in the future,” Riad Abbas said, commenting on recent deadly terrorist acts in Paris.

Sputnik News  According to the diplomat, terrorism has penetrated everywhere in Europe. “Now Europe is under pressure. Although Syrian peoples are suffering but the fact is that since terrorism has no boundaries it can reach any country,” he said, adding that all the countries must unite to combat extreme violence against civilians.

Syrians who fled their homeland due to the ongoing civil war will return to their cities and their work, Abbas noted.

The Paris terror attacks left at least 132 dead and over 350 injured, 99 critically.The Islamic State militant group claimed responsibility for the attacks in the French capital. According to media reports, at least two suspects have been in Syria at some time in the past.