A deal between Ukraine and Russia aims to ease the global food crisis.

Russia and Ukraine signed an agreement in Istanbul on Friday to free more than 20 million metric tons of grain stuck in blockaded Black Sea ports in Ukraine, a deal aimed at bringing down soaring grain prices and alleviating a mounting global hunger crisis.

The breakthrough comes after months of talks and was brokered with the help of the United Nations and Turkey. The agreement provides a method for exporting Ukrainian grain through Turkey, and it comes after the United Nations gave Russia assurances that it can export its grain and fertilizers.

If the agreement holds, it could help ease catastrophic food shortages that worsened when Russia invaded Ukraine in February. Ukraine is one of the world’s breadbaskets and the invasion reverberated across the global economy, aggravating a growing food crisis, contributing to famine in Africa and threatening political unrest in some countries.