In November 1919, rightist forces led by former Austro-Hungarian admiral Miklós Horthy entered Budapest; exhausted by the war and its aftermath, the populace accepted Horthy's leadership. In January 1920, parliamentary elections were held and Horthy was proclaimed Regent of the reestablished Kingdom of Hungary, inaugurating the so-called "Horthy era" (''Horthy-kor''). The new government worked quickly to normalize foreign relations while turning a blind eye to a White Terror that swept through the countryside; extrajudicial killings of suspected communists and Jews lasted well into 1920. On 4 June of that year, the Treaty of Trianon established new borders for Hungary. The country lost 71% of its territory and 66% of its antebellum population, as well as many sources of raw materials and its sole port, Fiume. Though the revision of the Treaty quickly rose to the top of the national political agenda, the Horthy government was not willing to resort to military intervention to do so.