India, June 16 -- Europe long viewed the Pakistan terror problem as a distant by-product of subcontinental rivalries. That illusion is now cracking.

New Delhi: From shadowy jihadist cells in Barcelona to child grooming rings in Rochdale, sham marriages in Cyprus to mass drownings off the coast of Greece-the common link is no longer invisible. Pakistani nationals are turning up with increasing frequency in European security files, not as victims of circumstance but as architects of civil disruption. According to Justice Project Pakistan, over 22,000 Pakistanis are currently imprisoned abroad, with a steadily growing footprint in Europe. The nature of their offences is no longer confined to minor immigration infractions. In case after case...