Such announcements only reflect the policies of Bibi's government which are anti-peace negotiations. Claiming Jerusalem to be eternal capital means ending the negotiations before they start. If Jerusalem is not at the top of the agenda, and if East Jerusalem wasn't discussed to be a Palestinian capital, why would Pals start negotiations? Even though E. Jerusalem is international recognized as an occupied territory, Liberman is still making such announcements. Israel must recognize Pals right to build their state with E. Jerusalem as its capital, if they aspire for peace. Every Israeli knows that Jerusalem is part of a Muslim's belief and all the claims about Jerusalem made by Jews are just mish mash, even your own historians and leaders confirmed this.
Police disperse hundreds in brawl in Kafr Manda, northern Israel (Haaretz)
from the article: Lieberman: Jerusalem is our eternal capital, it will never be divided