In the citizenship pledge, Australian citizens pledge their loyalty to Australia and its people. Australian citizens may also hold the citizenship of another country or countries if the laws of those countries allow. This is known as dual, or multiple, citizenship. However, even if a person is also a citizen of another country, an Australian citizen within Australia must follow all Australian laws at all times. Some Australian laws must also be followed by Australian citizens even when they are overseas.
Australian society is based on our shared obligations not to undermine Australia’s interests and security. For example, using social media to share official government secrets would be undermining Australia’s interests. Similarly, promoting distrust in and fear of an ethnic community would damage Australian community relations.
For further information on dual citizenship, see https://bit.ly/3sxemsO