I know real Lubavitchers aren't into Zionism too much, but here's my 2 cents.
Rav Yehuda Mamlek, one of the חשוב'ע סאכאטשאווער תלמידים, writes in אביר הרועים that the holy שם משמואל was very excited upon hearing about the declaration of Lord Balfour stating that the British Government appropriates
Eretz Yisroel for עם ישרא-ל.
A Meeting was called by the שם משמואל to get orthodox עסקנים and גבירים to buy land in ארץ ישרא-ל to build שיכונים and ישובים in the new land. At the event he showed them a אבן עזרא in מגילת אסתר saying that certain גאולה'ס have to happen when you see a sign from Hashem that the time has come. At the same time we had the holy Munkacher Rov זצ"ל calling the declaration בעל פעור etc.... נוסח אונטערלאנד - A place that was (in)famous for name calling. The Munkatcher's opposition didn't stop the train and the vision of the שם משמואל succeeded. One hundred years later and we now have almost a million Jews learning and davening in Eretz Yisroel , while several more millions are saved from definite assimilation. Obviously this does not play well in certain circles, you know who they are, who are blindfolded to reality. Not being comfortable going after the שם משמואל they'll kill the messenger, so to speak, which in this case is Rav Mamlek. That's fine. But we have now a new letter from Rav Michoel Forshlager, a סאכאטשאווער תלמיד (kosher in סאטמאר because he once glanced over at their side) vouching for Rav Mamlek's גדלות and honesty. So now we're in kind of a pickle... Their next move to discredit these facts will be to show that there is a letter from the שם משמואל against מזרחי, and Zionism, which is also part of their tactic that whoever disagrees with their philosophy, is on the same page with Ben Gurion on עקירת הדת. even though this plan for building the ישובים was to build חרדי ישובים against בן-גוריון ... but they don't care for the facts.... I hope my point is clear enough.