I think it is also important to recognise the global situation when we are discussing migratory flows into Europe and the UK.
All war is fundamentally about resources: who controls them, who benefits from them.
There is currently a belief in geostrategic circles that we are currently looking at the start of a "30 years war" in the Middle East and parts of Africa. This war will ostensibly be seen to be about "religion", "ethnicity" or "class", but, in reality, it will be all about resources.
And the cause of this resource crisis is stratospheric population growth in the ME and Africa since the 1960s.
The population of Iran has increased from 22 million in 1960 to 80 million today. Iraq has gone from 7 million to 33 million. Almost every Middle Eastern and many African countries has seen population growths of more than quadruple their population in 1960: Jordan, Lebanon, Saudi, UAE, Syria, Yemen, Libya, Morocco, Algeria, Ethiopia ...
These are huge increases in population in a very short space of time: only 55 years, less than two generations.
By contrast, Britain has gone from 53 million to 64 million in this time frame. The kind of population growths in the ME would equate to the British population currently being 200 million.
Imagine Britain with 200 million people, 147 million of those having been born since the 60s, because that is what we are talking about here when it comes to the strain on many ME and African countries.
That is a lot of pressure on resources on those countries. That's a lot of young men in the ME and Africa unable to find jobs, homes, and unable to found families of their own; that's a lot of young men without access to resources. And what happens when you have lots of young men with no access to resources?
They migrate or they fight.
And that fight tends to last until the population decreases to the extent where the remaining population has reasonable access to resources -- to be blunt, where every young man feels he can make a reasonable living, get married and support children.
Hence the belief that there will be a 30 years war in the ME.
We are seeing the start of this. We are seeing the first major wave of resource-starved migrant young men, and refugees from the opening battles in these resource wars.
We are arrogant and ignorant if we believe, as Brits, we can stop or solve this process in the ME or Africa. But we do have to consider how we can and will respond to the pressures it places upon us. We cannot let everyone that wishes to come into the country into the country for the next thirty years because it will create a population resource crisis of our own -- to which exactly the same impulses of migrate or fight will apply.
Already, there are resources tensions in Britain: that is the source of most UKIP votes and anti-immigrant feelings. The idea that it is all pure xenophobia is propaganda from invested parties who stand to gain from population increase in one way or another. In reality, Britain is one of the least xenophobic countries in the world and has absorbed migrants and refugees for decades.
In short, we must not attempt to solve other countries' population resource crises by inadvertently creating our own here in Britain. We need to step very carefully because, at the end of the day, humans are humans and the images of desperate young men at Calais will pale into insignificance when you have civic insurrection down your own road.