Temporary capital of Lithuania during the invasion of Poland, to Lithuania according to the Soviet–Lithuanian Mutual Assistance Treaty. Since then Vilnius has been the capital of the Lithuanian SSR and then independent Lithuania. Lithuania refused to have diplomatic relations between Poland and Lithuania until the ultimatum of 1938. Railroad traffic, telegraph lines or even mail could not cross the Polish–Lithuanian border. Lithuania continued to declare Vilnius as its capital in all official documents, including the constitution. Since the city was controlled by Poland, all Lithuanian authorities were transferred to the city of Kaunas, which became the seat of the government. To reconcile reality with
United States recognition of Jerusalem as capital of Israel commitment to a Palestinian State with East Jerusalem as its capital. Mogherini said that embassies should not be moved to Jerusalem while the final status of the city was disputed. She also noted that Israeli annexation of East Jerusalem was considered a violation of international law under a 1980 United Nations Security Council resolution. On December 11, Mogherini said that European nations would not move their embassies to Jerusalem. The EU countries of Austria, Romania, Hungary and the Czech Republic however defied the official EU stance and attended the official reception on the opening of the US embassy in Jerusalem.