On the return trip to the United States, President Roosevelt met with the President of Brazil, Getélio Vargas, at the Potenji River Conference, where they discussed Brazil`s participation in the war effort and defined the agreements that led to the creation of the Brazilian Expeditionary Force. The conference was held on January 28 and 29, 1943 aboard the USS Humboldt in the potenji River port of Natal.   As the talks progressed, agreement was quickly reached on the need to strengthen the Soviet Union, focus the bombing on Germany and win the Battle of the Atlantic. Discussions then became bogged down when the focus was on the allocation of resources between Europe and the Pacific. While the British preferred a defensive attitude in the Pacific and a total focus on the defeat of Germany in 1943, their American counterparts feared giving Japan time to consolidate their gains. There were other differences of opinion on the plans for Europe after the victory in North Africa. While American leaders were ready to commit an invasion of Sicily, others, such as the Chief of Staff of the U.S. Army, General George Marshall, wanted to know Britain`s ideas to deal a fatal blow to Germany. Although the agreement allowed the Americans to continue to seek retaliation against Japan, it also showed that they had been mishandled by the better prepared British.
Other topics of discussion included the achievement of a certain unity between the French heads of state and government, General Charles de Gaulle, and General Henri Giraud. While de Gaulle regarded Giraud as an Anglo-American puppet, this first took for a selfish and weak commander. Although they met Roosevelt, none of them impressed the American leader. On 24 January, 27 journalists were called to the hotel for an announcement. Surprised that they found a large number of senior Allied military officials there, they were stunned when Roosevelt and Churchill showed up at a press conference. Accompanied by de Gaulle and Giraud, Roosevelt forced the two Frenchmen to shake hands in a demonstration of unity. After an excursion to Marrakech, the two heads of state went to Washington, DC and London.