Original: Johor is surrounded by Pahang to the north, Malacca and Negeri Sembilan to the northwest, and the Straits of Johor to the south which separates Johor and the Republic of Singapore.
Simplified: Johor is surrounded by Pahang to the north, Malacca and Negeri Sembilan to the northwest, and the Straits of Johor to the south which is divided by the international border between Malaysia and the Republic of Singapore.