The Rambam and the Mitzvah of Conquering and Dwelling in Eretz Israel

Question: If there is a mitzvah of conquering and dwelling in Eretz Yisrael throughout all generations, why doesn't the Rambam count it in his enumeration of the mitzvot?
Answer: Maran Ha-Rav Kook answered this question: It is not because conquering and dwelling in Eretz Yisrael is less of a mitzvah that he does not count it but, on the contrary, because it is greater than the other mitzvot. The Rambam explained in his principles for which mitzvot are included among the 613 mitzvot that he does not include general mitzvot which apply to the entire Torah (fourth principle). The mitzvah of conquering and dwelling in Eretz Yisrael is a general mitzvah since the essence of observing the entire Torah and all of its mitzvot is in Eretz Yisrael in particular. As a result, "Dwelling in Eretz Yisrael is equal to all of the other mitzvot in the Torah" (Sifri Devarim 11:17). One who looks in the Sefer Ha-Mitzvot of the Rambam, in the mitzvah of sanctifying the new month, can see how the Rambam understood the mitzvah of settling Eretz Yisrael as the root of all of the mitzvot (mitzvah 153). The Or Ha-Chaim Ha-Kadosh similarly wrote: "For dwelling in the Land is a mitzvah which encompasses the entire Torah" (Devarim 30:20). This mitzvah is the root and foundation which stands above all of the mitzvot, the Rambam therefore does not enumerate it.
[Sichot Ha-Rav Tzvi Yehudah – Eretz Yisrael p. 100, Le-Netivot Yisrael vol. 1 p. 121 [161], Ha-Rav David Cohain Ha-Nazir in the booklet "Hitnotzetzut Or Ha-Geulah p. 17, Ha-Rav Shlomo Goren in Torat Ha-Moadim p. 36 and Torat Ha-Shabbat Ve-Ha-Moed p. 150 and Shut Tzitz Eliezer 7:48 in Kuntres Orchot Ha-Mishpatim chap. 12 - in the name of Maran Ha-Rav Kook]