There may be a problem with definition here between migrant and refugee.

A refugee is a person who is displaced from his home country by risk of persecution. (Whether or not war within that country gives refugee status is unclear. The term "Refugee" is defined in the 1951 Convention Relating to the Status of Refugees, and an amending 1967 Protocol. These can be found here http://www.unhcr.org/en-us/3b66c2aa10. I have read these carefully and I cannot find in the definition of "Refugee" any mention of people fleeing "armed conflict". It refers specifically to persecution. However, another, INFORMAL, UN document here http://refugeesmigrants.un.org/definitions includes "conflict". So which is correct?)

The 1951 and 1967 documents are not very long or difficult to read. They describe the obligations of the receiving country and the obligations of the refugee. It is not possible within the space allowed here to list all these – please look at the documents.

A “Migrant” however is someone who leaves his home country for some non-refugee reason – for a better standard of living, to join family and so on. In these cases the migrant’s target country can accept of refuse entry according to that country’s laws. If accepted, then again, according to the host country’s laws, migrants obtain various rights and obligations. These vary from country to country and also over time, even within the European Union which has no standard rules that apply to its member countries. Some countries allow (over time) migrants to apply for citizenship, and the process is easier or harder depending on the host country’s laws.