It is Knesset that determined the unification of Jerusalem and "only" israeli law determines that Jerusalem is the capital city of Israel. All the ambassadors of EU countries,US and most of the other countries represented In Israel boycotted the 40Years Unification Celebrations, because they do not recognize the legimity of the unified Jerusalem. Only 7 ambassadors took part in (Georgia,nigeria,Ethiopia,Cameron, Gongo,Ivory Coast,Honduras).
Shaffir to Herzog: Opposition failed to show leadership in political battles against PM (Haaretz)
from the article: Heading to December