全球移民难民：趋势、挑战与影响（2020～2022）

Abstract:The movement of population across national borders is an important phenomenon in the era of globalization. Even though both the total numbers of international migrants and refugees have been on the rise in the past 50 years，the COVID-19 pandemic and the Russia-Ukraine conflict are critical issues affecting the current scale of migrants and refugees. On the one hand，the implementation of travel restrictions makes it more difficult to move across borders，leading to a significant decline in the number of migrants in 2021. On the other，the conflict between Russia and Ukraine has caused an enormous refugee flow in Europe in recent decades，which will change the landscape of the EU’s politics，economy，and society. Cross-border population movement has raised wide attention because it triggered humanitarian violations and long-term changes in countries’ demographic structure，which would，in turn，affect the dynamics of great powers’ competition.

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