Foreign Minister Mevlüt Çavuşoğlu said on Friday that finding a solution to problems faced by the least developed countries (LDCs) is a "human obligation."

In a speech at the U.N.'s Midterm Review Conference of the Istanbul Program of Action for Least-Developed Countries in Antalya, Çavuşoğlu said that billions spent by Ankara on development assistance was a decisive move to aid such nations.

He said: "Our official development assistance was around $1 billion in 2010." That figure reached $3.9 billion in 2015, an amount equal to "54 per 1,000 of our national income."

The three-day conference in southern Turkey is a comprehensive review of how the 2011 Istanbul Program of Action has been implemented.

That program, passed at the 4th U.N. Conference on Least-Developed Countries, charts out the international community's strategy for sustainable development through 2021, with a strong focus on developing the productive capacity of LDCs.

Friday's conference was co-organized by the United Nations Population Fund and the U.N. Office of the High Representative for Least-Developed Countries.

It aims to create sustainable growth in 48 countries, which account for 12 percent of the world's population.

Topics covered include production capacity, agriculture, food security and rural development, fiscal resources, trade, economic diversification and human and social development.