The UNHCR like any institution have to have a doctrine. They used to be focused, on immediate care, but now there reports focus on systemic problems and holistic solutions. Run that babble, through a BS Filter:-
The Agency and the NGOs have ever so cleverly identified (obvious to anyone), that famine, war and drought effects are heightened due to population growth with limited resources, Malthus is right, in terms of developing nations. So, the solution is to encourage, facilitate, support the transfer of excess population to the west. Soros more or less is open about it.
One assumes, western governments who are stocked with people supposedly far more clever than me, are aware of it and tacitly in support of the policy.