How would Turkey’s EU membership stem the flow of migrants?

Stop me if I haven’t got this right. But as I understand it, as a result of the deal that the EU struck with Turkey earlier this week to get it to keep more migrants who’d otherwise end up in Greece and then Germany, the EU will now be expediting the process whereby Turkey becomes an EU member even though only three per cent of it is actually European.

So…in order to stem a flow of migrants that could, at worst, amount to over a million people this year, we are admitting to the EU a country with a population of 75 million, any of whom would then have the right to live and work anywhere in the Union. It seems like an odd sort of cost-benefit calculation; I’d just bung them the cash, myself.