Yes, I know, this is from Wikipedia, but it says what needs to be said to this "Do you know EU has plans to let in Turkey, Siria, Israel and only God knows what other countries?"
"There are four official candidate countries, Croatia, Iceland, Macedonia, and Turkey. Albania, Bosnia and Herzegovina, Montenegro, and Serbia are officially recognised as potential candidates. Kosovo is also listed as a potential candidate but the European Commission does not list it as an independent country because not all member states recognise it as an independent country separate from Serbia.
Four Western European countries that have chosen not to join the EU have partly committed to the EU's economy and regulations: Iceland, which is a candidate country, Liechtenstein and Norway, which are a part of the single market through the European Economic Area, and Switzerland, which has similar ties through bilateral treaties. The relationships of the European microstates, Andorra, Monaco, San Marino and the Vatican include the use of the euro and other areas of co-operation."