If they&#x27;re half-way clever about it they&#x27;ll hit in places that are perceived as &#x27;soft&#x27;.<p>Note that this is the second attack on Paris. The UK is a harder target because you have to cross a border that is not as easy to traverse as a road and the Spanish police has gotten a lot more &#x27;up-close-and-personal&#x27; with wanna-be terrorists than they were before. Belgium it turns out is an easy place to hide for these characters and that&#x27;s one reason I suspect Amsterdam would be more likely than Madrid simply because it is physically a lot closer. It is also why I doubt the effectiveness of the &#x27;double screening&#x27; for airline passengers announced today, none of these guys traveled by plane.<p>Even so, that doesn&#x27;t rule out another attack in Spain - or even Madrid - nor does it rule out an attack in London, Amsterdam, Berlin, Copenhagen or anywhere else in the Schengen zone. Weapons and easily radicalized youths aplenty.<p>It&#x27;s a matter of time before the next attack, but that doesn&#x27;t mean we should sit still. It means the plan of attack needs to change, possibly radically so, but not after sufficient reflection on why the current approach does not appear to work as well as it should.