Hogwash!
You're misunderstanding my point completely.
Pagan nationalists, whether left or right, are basically polygenists (ie, they deny that the entire human race is the offspring of one original couple) and henotheists (ie, they deny there is One G-d for everyone and believe instead in as many different "gxds" as there are nations, each national "gxd" being supposedly equally valid. The basis of the Jewish (and ultimately the chr*stian) worldview is that the human race is a unit sprung from a single ancestor created by (and owing worship to) a single G-d. If this is what you call "one world government," then you must be a polytheist.
The first people I ever heard raising the warning against "one world government" and "one world religion" were Fundamentalist Protestants. Yet what they were warning against was a great false world order and false religion which they said must come before the triumph of the One G-d. After this there would still be a one world religion and a "one world government" (if that's what you want to call the Millenium), but these would be good because they would be from G-d. It was only the "counterfeits" that were evil, not the real thing.
Some people however have gone so far as to imply that there will never be an end to history at which the One G-d will be universally recognized and His laws obeyed. This is what I call "pagan nationalism," and it's the same whether it emanates from Nazis or Communists.
Ironically, the unity of the human race under G-d is instictively recognized by all to be somehow tied to Jewish separateness. This is why all those "nationalists" and opponents of "race-mixing" hate Jewish nationalism and want the Jewish nation destroyed by intermarriage. Without the distinct Jewish Nation to tie humanity to the Objective G-d all the nations would wander off on their own and create their own worldviews, with no connection whatsoever between them. These worldviews would be manmade and subjective, as opposed to Heavenly and objective.
Make no mistake--"world religion" and "world government" under any other authority than the One True G-d would be an evil that would dwarf all previous ones (and such a theing was presaged at the building of the Tower of Babel). However, eventually at the end of history mankind will be One under the One G-d. Please do not confuse this G-dly eschaton with the plots of humanists and occultists.
PS: Everyone who believes his religion is true and should be shared by all is theoretically an advocate of "one world religion!"
Well, as a Catholic, I disagree that a “distinct Jewish Nation” is needed to “tie humanity to the Objective G-d.” I believe that the Roman Catholic Church serves that function in the world in this era. But I don’t want to get into a religious debate with you. I just don’t think fringe groups like the ones you describe are really worth worrying about. While I concede such people exist, I fail to see any influence they have on the society at large. A far greater danger are the secular-modernist, humanist One Worlders. A benevolent world government, like you say, can only be founded by God, and that will only happen in His good time. But the secular-modernists want to create one under their own image and they have vastly more influence in the world today than some wild-eyed neo-Nazi wackjobs.