Fresh terror busts in Australia expose a common Achilles’ heel of the West: Indiscriminate refugee policies turn free countries into breeding grounds for jihad. It’s the same game in America. Soldiers of Islam have weaponized our blind generosity against us.

In Sydney this week, authorities detained a half-dozen Muslim plotters and arrested a top collaborator in an alleged conspiracy to kidnap and behead a random Australian citizen. The accused mastermind? Afghan refugee turned Aussie Islamic State of Iraq and Syria recruiter Mohammad Ali Baryalei. He and his aristocratic family were welcomed Down Under decades ago. Baryalei returned the favor by taking to the streets of Sydney to recruit and radicalize dozens of fellow Muslim immigrants or their children.