since when has isis itself any control over the countries they target?
its a literally draw of the luck from their perspective, when it comes to who and when someone feels the need to commit a suicide act like in london.
they learn about it from the news and they claim it to have been in their name.
god forbid we had two active groups like isis, they'd be arguing about in whom's name that act was committed.
anyway, the thing about trying to bomb isis is, where is isis?
you cant bomb what has no headquarters. you can't bomb what has no formal infrastructure. you can't assassinate a leader of a leaderless organization.
you could bomb the cities they hold, though they consist of just a few dozen isis fighters, a bunch of people bowing their head to them to not get shot and thousands of innocents.
i mean, lets just consider isis manages to somehow storm part of a city in serbia, would you want that part of the city to be turned into dresden in 1945?
and you can't prevent stuff like those car attacks either.
you can't however ignore one thing, outside of the core middle east areas around syria, isis basically does nothing. if isis was just a quarter of the threat the media make them out to be, there wouldn't be a car attack every week or two, but every minute or two.
these attacks are so simple and cheap (unlike say, a 9/11 incident, which seems more and more unrealistic to have been a terrorist plot when you compare it to whats happening in the terror business these days) them not happening every minute just shows how little interest there actually is in taking part in a holy war.