"Turkish President Recep Tayyip Erdogan on Wednesday said it had warned Belgium last year that suspected Brussels attacker Ibrahim El-Bakraoui was an Islamic militant, in a potentially embarrassing indictment of European security agencies."

"Ibrahim El-Bakraoui, 29, was identified by Belgian federal prosecutors on Wednesday as one of two suicide bombers who killed 11 people and injured scores at Brussels Zaventem airport. His brother Khalid, 27, set off his suicide belt on a Brussels metro around one hour later, claiming the lives of an additional 20 people."

"The official said Dutch authorities later allowed El-Bakraoui to go free because Belgian authorities could not establish any ties to terrorism."

So much for relying on other countries in Europe to "vet" possible terrorists.