Ключевые слова: agreement, america, american, authority, business, businessmen, chess, chessboard, communication, compete, competition, concept, conceptual, contract, cooperation, counter, country, deal, diplomacy, diplomat, diplomatic, flags, game, government, interaction, leader, meeting, move, nation, national, official, people, political, politician, politics, relation, rival, rivalry, state, sudan, sudanian, summit, treaty, united states, usa, versus, vs,