[moonrab]

This I suppose
https://www.thestar.com.my/news/nation/2...our-rights


but from 1948 version  state

https://link.springer.com/chapter/10.105...0270848_13
The Queen and the Malay rulers have power to admit any other territory
into the federation by mutual agreement. Under the High Commissioner,
to whom power is delegated jointly by the Queen and the Malay rulers, the
central Government consists of a federal executive council and federal
legislative council.

The Queen, through the High Commissioner,
exercises control over questions of defence and external relations. The
rulers have agreed to accept the High Commissioner's advice in all matters of
government, excepting those relating to the Moslem religion and Malay
custom. The power of advice in State matters is to be


Maybe Tunku has false impression they enjoy special status as before 1946, 
as below
https://www.msn.com/en-my/news/national/...r-BB1oBOzh

but seriously under colony they can exit meh.  

BTW, you can read our version of the story 
https://www.nlb.gov.sg/main/article-deta...a99d598525

According to him, there is a Johor State Constitution..🤣
Anyway, he need either China or US support for secession..🤭