As tensions in pre-war Europe continued to grow, it was expected that Germany would make a move against Lithuania to reacquire the region. German Foreign Minister Joachim von Ribbentrop delivered an ultimatum to the Lithuanian Foreign Minister on 20 March 1939, demanding the surrender of Klaipėda. Lithuania, unable to secure international support for its cause, submitted to the ultimatum and, in exchange for the right to use the new harbour facilities as a Free Port, ceded the disputed region to Germany in the late evening of 22 March 1939. Adolf Hitler visited the harbour and delivered a speech to the city residents. This was Hitler's last territorial acquisition before World War II.