On Thursday 23 June 2016, 51.9% of the electorate of the UK voted to leave the European Union (EU).
That vote was just a vote. By itself, it does not alter the legal relationships of the UK, Europe and the rest of the world.
First of all, the formal process of termination must commence pursuant to Article 50 of the Treaty on European Union (TEU) with a termination notice from the UK government to be given in accordance with the constitutional requirements prevailing in the UK, which will start a two-year period (Sunset Period) of negotiation on the details of the withdrawal (Withdrawal Agreement). Such withdrawal notice will, with some likelihood, only be given by the UK government after it has obtained the approval therefore by the UK Parliament.