I'd like to ask about the grammar structure and the meaning of the second part of the following sentence:
Today, developed and developing countries may want to start working together in devising strategies to address their respective needs particularly in the light of the migration-demography nexus which will be discussed below – developed countries to be assured of the manpower that they need and the labour-sending countries by providing the jobs that their citizens need.
I think that "developed countries to be assured of the manpower that they need" means "It should be guaranteed that developed country will receive necessary manpower" but I'm not sure.
As for "labour-sending countries by providing the jobs that their citizens need" I cannot understand which "by providing the jobs that their citizens need" refers to in the sentence.
1 Yes; they need to know that their labour requirements can be met by migration.
2 The countries that are sending people to work abroad need to be able to maitain service provision. At the moment, for example, some developing countries are suffering acute shortages of doctors because the ones they train are then going abroad to work.