The answer is:

>! Switzerland

How?

>! They are sharing their borders  
>! <br/>
>! [Belgium is in The Netherlands](https://en.wikipedia.org/wiki/Belgium%E2%80%93Netherlands_relations)  
>!
>! [Germany is in Switzerland](https://en.wikipedia.org/wiki/Germany%E2%80%93Switzerland_relations)  
>!
>! [The UAE is in Oman](https://en.wikipedia.org/wiki/Oman%E2%80%93United_Arab_Emirates_relations)  
>!
>! [Russia is in Belarus](https://en.wikipedia.org/wiki/Belarus%E2%80%93Russia_relations)  
>!
>! So the Italia aka [Italy is in Switzerland](https://en.wikipedia.org/wiki/Italy%E2%80%93Switzerland_relations)