Iron Curtain and Quick Kill (not mentioned in the article) have been in development since 2006.<p>The idea and the capability is nowhere near as new as the article implies.  The slow adoption my the US and Israel is motivated more by the collateral damage concerns that caused the Russians to scrap the Drozd system in 1980.  As far as I know, Arena has similar issues, just not nearly as badly as Drozd (which basically shot a 107mm fragmentation grenade at the incoming round).