berlin germany domestic intelligence agency say thursday minors return war zone syria iraq could grow new generation recruit germany islamic state group 950 people germany go join islamic state syria iraq 20 percent women percent minors bfv domestic intelligence agency say islamic state lose territory syria iraq many women expect return children germany need prepare risk children radicalize bfv chief hans-georg maassen say see danger children socialize indoctrinate jihadists return germany war zone say maassen could allow new generation jihadists raise last year 12-year-old german-iraqi boy fail attempt detonate two explosive devices western town ludwigshafen germany say worry new generation islamic state recruit