DrZoidberg
Contributor
Security measures will drastically reduce attacks. We can't prevent drugs entering the USA but we do reduce the amount that do. This is part of our defence. In any war there are casualties. The Wars in Iraq and Syria have only allowed these groups to fill the voids left by the regimes when their armies lost control of these territories.
Every attack is a one of thing.
The drug trade is a good analogy. No, you are wrong. Trying to stop drugs at borders has zero impact on availability. It's like standing on an already sunken boat still trying to scoop out water. There's been tonnes of studies on this. Trying to stop drugs at all is an utter and complete waste of resources.
Here's LEAP, an American organisation that consists of police only, ie the people who have an incentive to support the war on crime, who are against prohibition anyway. Because it's such a colossal waste of time.
http://www.leap.cc/
Here's the founder explaining himself
https://www.youtube.com/watch?v=W8yYJ_oV6xk