ofall=allof?两个句子：Sarkozy'sofficesaidhehadtoldMedvedevduringthephoneconversationthattheremustbea"withdrawal,withoutdelay,ofalltheRussianmilitaryforcesthatenteredGeorgiasinceAug.7."thatiswhyi’mhere.andyou

Question

of all = all of?
两个句子：
Sarkozy's office said he had told Medvedev during the phone conversation that there must be a "withdrawal,without delay,of all the Russian military forces that entered Georgia since Aug.7."
that is why i’m here.and you are here because you too know
that yearning.this city,of all cities,knows the dream of freedom.
请教一下什么情况下这样用?前面有个名词?感觉等同于all of,属于什么语法现象?
感谢混元初开回答，所有城市中的这个城市？那该如何翻译？第一个句子呢？
第一句中的of all该如何解释？

Answer 1

of all 是在所有的……之中例如,he is the best one of all the students他是所有学生中最好的
all of 是所有……,例如,all of people like their country 所有人都喜欢他们的祖国
而对于这个问题,很明显,后面用的是Knows对吧,那证明了前面是单数,而如果是all of 后面应该动词的复数形式即know