According to the UNHCR, the UN Refugee Agency, the largest contributor to the refugee crisis in 2020 was war. More than two-thirds of all refugees worldwide came from just five countries, all of which have been affected by armed conflict: Syria, Venezuela, Afghanistan, South Sudan and Myanmar. War can cause people to flee their homes due to violence, insecurity, human rights violations, persecution and fear. War can also destroy infrastructure, disrupt livelihoods, create food insecurity and exacerbate poverty. War can also trigger other factors that cause displacement, such as climate change and hunger.

Therefore, war is considered to be the biggest cause of the refugee crisis in the world. However, it is important to note that other factors, such as persecution, climate change and inequality, are also significant and interrelated causes that cannot be ignored or overlooked. The refugee crisis is a complex and multifaceted phenomenon that requires comprehensive and holistic solutions.
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