Is it acceptable to prioritize national interests over international cooperation? For example, if a country's actions harm the global community, is it justifiable if it benefits the country's citizens?
Multi-level governance and economic inequality make this a complex issue. When national interests adversely affect international relations, it may result in a crisis or war. Although a nationalist agenda may receive approval by a majority of a country's internal government or citizenry, benefits are uncertain. For example, reactionary fiscal policy such as tariffs have negative effects on economic growth for all parties involved. 
Ireland's Great Famine from 1845-1852 is a potential case study for both the positive and negative consequences that can arise from prioritizing nationalist policy.
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