What is classification of EU?

How are the 27 countries in the eu linked economically? NATO and the Warsaw Pact were example of? Where is interpol office in Hong Kong? Who uses the logo similar to UNICEF? Where can someone find information about the United Nations Convention on the rights of the child? What does N in NATO stand for? Why was joining the WTO such a major step for China? When was Western European Nuclear Regulators' Association created? When did Cambodia join United Nations? What areas of Yugoslavia were attacked by NATO? Which international agreement has peace and scientific research as its main purposes? What are the purposes of the united nation? Did NATO help the US after 911? How school preserve the cultural heritage? When did united nations general assembly happen on which day? What does UNICEF stands for? In what year did the Sydney Opera House come a world heritage site? Is Switzerland a member of the the European Union? What does the United Nations of human rights do? What term refers to the process of trying to create good open relations between countries?