4 Lessons

Jerusalem Day YERUSHALAYIM= RELIGIOUS+NATIONALIST+ UNIVERSALIST
Many describe themselves as religious-Zionists, but Yerushalayim and Rav Kook teach us that the time has come to add a third heading to our title, in order to complete all 3 ideologies of mankind and Torah.

The Essence of the Day Is it Time to Change Our Name to: "Religious-Zionist-Universalist"?
Rav Kook ingeniously explains that all ideologies can be defined within the major 3 ideologies of mankind: religion- nationalism- morality/universalism. These are also the 3 factions causing the disunity in Israel today. These 3 are all (and always were) based in Yerushalayim- the national, religious and universal capitol. All 3 are not only ideals, but also necessary to balance & make sure that the other 2 don't get extreme, and start putting down the others

The Obligation of Thanking Hashem Remembering the 6 Day War- Yom Yerushalayim & Declaring New Holidays
It sounds complicated to declare new holidays, but it's actually not at all. Similarly to allow haircuts and music during the Omer also is simple. Just declaring Hallel with a bracha is more complicated, but an historic return to the forgotten background of the "6 Day War" helps clarify that, as well.

Additional Lessons Y'rushalayim: Uniting Religious-Zionist-Humanist- The 3 Ideologies of Mankind
When Jerusalem is built in her glory, and even already today, it's the religious, national and universal capitol of Israel. God placed the "checks and balance" system, comprised by this Triumvirate of the king (national leader), Nasi haSenhedrin (religious leader) and Kohen Gadol ("Lover of Peace"- the humanist/universal leader) on one mountain forcing them to unite and work together. Rav Kook analyzes that all human ideologies are either right-wing (natl.), left (humanist), or religious (all the above are religious, but here, in the limited sense), who are all necessary, and also limit each other from going extreme. As long as each stress the positive & compliments the others, and isn't "anti", we will reveal the Unity of God and Israel.