And I also think the caption is complete bullshit and sounds like Russian propaganda

How so? Amerika/Europe fully supports "Israel". The U.K is literally outlawing support for Palestine and Germany does a lot of the same and is even more zealous for it. Have you seen how Germany treats their people who don't support "Israel"?

At least Palestine has a better relation with Russia and has a better history with the country. Hamas leadership has had talks with Russia.