> For instance many EU countries embassies will give aid to the members of other EU states that do not have local representation.

That's actually part of EU law. As an EU citizen, if you have no national diplomatic or consular representation in the country you're in you're entitled to help from any other EU member's embassy or consulate.

So let's say you're a Slovakian citizen in Sierra Leone, the EU consular protection site will direct you towards the British High Commission in Freetown: http://ec.europa.eu/consularprotection/representations_en?f%...