Who is responsible for refugee issues

Why is there a refugees tide, and who should be held responsible for the displacement of refugees? Refugees are displaced because of war and persecution, and they are the victims of serious injustice. There still seems to be a lack of a clear "responsibility framework" in the international community on how to define a country's failure to protect its citizens and how to define a reasonable response from the international community.

Reference Link:

https://youtu.be/mHFYv22IbQo