UN chief suggests solution for Ukraine Black Sea grain deal in letter to Putin.

UN Secretary-General Antonio Guterres proposed a "way forward aimed at the improvement, extension and expansion" of the Black Sea grain deal between Ukraine and Russia, in a letter to Russian President Vladimir Putin. The deal, brokered by the UN and Turkey, was agreed by Russia and Ukraine in July last year to help tackle global food insecurity. However, Russia has signaled it will not allow the deal to continue beyond May 18 because a list of demands for its exports has not been met.