History of Latvia Latvian-Polish border was demarcated between 1933 and 1938. The earliest foreign policy goals were securing peace with Soviet Russia and Germany, gaining international recognition and joining the League of Nations. All this was achieved by the efforts of Zigfrīds Anna Meierovics. The hope of union of Baltic countries - Poland, Lithuania, Latvia, Estonia, Finland - faded after 1922. After that Latvia was the most energetic proponent of Baltic unity and Baltic Entente. On November 1, 1923 Latvia and Estonia signed a military alliance, followed by trade agreements. Latvia tried to maintain good relations with regional hegemons Russia and Germany and
Oil shale in Estonia increasing the use of other energy sources such as renewable energy and natural gas. In 2016, 73% of oil shale mined in Estonia was used for power generation, and about 90% of Estonia's electricity was generated from oil shale. About 15% of produced electricity was exported to Finland and Latvia. Eesti Energia owns the largest oil shale-fuelled power stations (Narva Power Stations) in the world. In addition, a new 300 MW station, which will use circulating fluidised bed boiler technology, is under construction in Auvere. In 2010, 11.4% of the heat supply in Estonia was generated by direct combustion of