(Reuters) – Russia on Monday told a top United Nations representative that the extension of a landmark Black Sea grain deal was dependent on the West easing Russia’s own agricultural and fertiliser exports, the defence ministry said in a statement. In a meeting in Moscow, Russia’s deputy defence minister Alexander Fomin told U.N. Under-Secretary-General Martin Griffiths that extending the deal, which unlocked Ukrainian agricultural exports from its southern ports, “directly depends on ensuring full implementation of all previously reached agreements.” Russia says the impact of Western sanction…