Earlier quoted context omitted.
>But for many states, they have significantly greater power by virtue of being in the EU than they would without. Arguably, even the UK lost power by leaving. What kind of loss of power are you referring to?
The UK was one of the largest members of the EU, and as such had a substantial say over it's direction and policies; and as the EU is a major economic power, consequently that is power in the world as well. That is, it's government had this, as an "inside the room" participant. Power is often exercised by that means; in fact one definition of power is your having the means to sway others. For example, in the 90s the…