The policies of Tanzania’s president, John Pombe Magufuli, have weakened the international position of his country, one of the biggest economies of East Africa. By scaling down involvement in the East Africa Community, he limited the country’s weight in the region, and by provoking conflict with the EU, he risks restrictions on access to development funds and European markets. That will make it difficult for Poland to achieve its policy goals for Tanzania, particularly in economic cooperation, which has been developing dynamically in recent years.