Show me yours and I'll show you mine...

Government coming under pressure to provide guarantees that those EU nationals already living and working here should have the right to continue to do so after we leave the EU.  The Government's response is that they would be content to do that provided that the EU gave similar guarantees regarding British citizens living and working in the EU.  Problem is - and this will become more and more important as we negotiate the terms of our leaving - that the EU cannot really agree to anything unless all its member countries agree, and that is a bit of a bureaucratic nightmare. So, should we take the moral stance, and unilaterally do it anyway?