Naval Air Station Keflavik Iceland protested the invasion but asked the populace to treat the occupying force as guests. Following talks between British Prime Minister Winston S. Churchill and President Franklin D. Roosevelt of the United States, Iceland agreed to a tripartite treaty under which United States Marines were to relieve the British garrison in Iceland on the condition that all military forces be withdrawn from Iceland immediately upon the conclusion of the war in Europe. In addition to their defense role, U.S. forces constructed the Keflavik Airport as a refueling point for aircraft deliveries and cargo flights to Europe. With the end of
Mamamah International Airport airport development was expected to be followed by the construction of a new State House, parliament building, ministry buildings, court houses and other support facilities. The developments were intended to improve Sierra Leone's competitiveness as the country prepares to become a middle income country by 2035. Other related development projects are the planned bridging of "Tagrin Bay", which separates Freetown from the peninsula on which Lungi International Airport is located, and the ongoing expansion of the port of Freetown. China Railway International Group had been contracted to build the airport at a cost of US$318 million, borrowed from the Exim