CEP Senior Director Dr. Hans-Jakob Schindler writes: "Two decades ago, on March 11, 2004, Europe was shaken by what is still one of the deadliest terror attacks on its soil. 

The Madrid train bombings, which claimed the lives of 191 people and injured over 2,000 others, left an indelible mark on Spain and the global community. 

As we mark the anniversary of this tragic event, it is evident that despite significant advances in counter-terrorism capabilities, the challenges posed by Islamist extremism and terrorism remain as complex and formidable as ever."