This is an english linguistic practice called metonymy. This practice involves referring to a whole entity by something that it is part of it. For example, Berl

This is an english linguistic practice called metonymy. This practice involves referring to a whole entity by something that it is part of it. For example, Berlin is part (the capital) of Germany. This is a very common practice in discussing international politics, with other examples being Washington, Moscow, and Beijing to refer to the US, Russia and China respectively. More info can be found here: https://en.wikipedia.org/wiki/Metonymy https://en.wikipedia.org/wiki/Metonymy