<p>Daffodil Day, usually held in spring, raises funds for cancer awareness and research using this symbol of hope. On that day, people who donate money to this good cause are usually given a yellow daffodil pin to wear. When I lived in Auckland, New Zealand, on the last Friday in August most people walking around the city centre proudly wore a cheerful yellow flower. So many people generously participated in this initiative that one almost felt obliged to join the cause in order to wear the 'uniform' - the daffodil pin - as everyone else did on that day. To donate and to wear a daffodil is the social expectation, and operating in social environment people often endeavour to meet the expectation by doing the 'appropriate things' defined by societies or communities. After all, who does not like to receive a beam of acceptance and appreciation from a fellow daffodil bearer in Auckland's Queen Street?</p><p>States in international society are no different. In some ways, states wear 'uniforms' while executing domestic and foreign affairs just as human beings do within their social groups. States develop the understandings of desirable behaviour from the international community with which they interact and identify. They are 'socialised' to act in line with the expectations of international community. These expectations are expressed in the form of international norms, a prescriptive set of ideas about the 'appropriate behaviour for actors with a given identity' (Finnemore and Sikkink 891). Motivated by this logic of appropriateness, states that comply with certain international norms in world politics justify and undertake actions that are considered appropriate for their identities. This essay starts with examining how international norms can be spread to different countries through the process of 'state socialisation' (how the countries are 'talked into' wearing the 'uniform'). Second, the essay investigates the idea of 'cultural match': how domestic actors comply with an international norm by interpreting and manipulating it according to their local political and legal practices (how the countries wear the 'uniform' differently). Lastly, the essay probes the current international normative community and the liberal values embedded in major international norms (whether states would continue wearing the 'uniform').</p>