The problem with this, historically is that the way Europe's geography works, a number of countries are just not going to fairly share in the burden of defending Europe, while other countries have the ability to tax foreign trade. Ireland is famous for this, and looking at a map, you can see why. Spain, Turkey and Denmark have historically taxed foreign trade. Additionally a number of countries have "unfair" advantag…
Where do you get this from? Is this a remark that comes from antipathy to social democracy? Every speech by Sanchez that I have listened to over the last year has him promoting free trade, even the wiki says so:
Sánchez has been a strong advocate for finalizing the long-negotiated EU–Mercosur Free Trade Agreement,[170] which aims to establish one of the world's largest free trade areas.[171]