EU Parliament overwhelmingly votes in favour of the country Palestine

[Filuwaúrdjan]

committed to it are using the leverage they have to increase this likelihood again.

It is more an issue of acting like they (and this applies not just to the EU mickey mouse parliament, but to other legislatures that have passed similar votes) have leverage. If there is an improvement in the general situation in the future, it is unlikely to be caused by anything politicians elsewhere do (and if thats not the case, it won't be these politicians).

[Filuwaúrdjan]

I don't see why people are even opposed to Palestine being a country. I mean, it was a soverign state before WWII.

Where did you hear that? What is currently the State of Israel and the Palestinian territories/State of Palestine/etc was a British imperial possession (officially as a Mandate on behalf of the League of Nations, but LOL) from the end of the First World War until the 1940s. Before then the area was part of the Ottoman Empire. Not that this has any bearing on the current political situation.