Iranian President Hassan Rouhani on Friday said ties with the United States had improved, though there was "still a long road to travel" before the two estranged nations could have normal relations."The situation has certainly changed," Rouhani, in New York for the United Nations General Assembly, told a group of senior editors from media organizations. "We can point to the tangibles, the many steps forward, but there is still a long road to travel."He described the historic nuclear deal between Iran and the United States, Britain, France, Germany, Russia and China as a "big test" for US-Iranian relations and said that it was important to create an atmosphere of trust."If we continue on the path, the road will be paved to further cooperation and collaboration," he said, adding that "we have seen good faith between the two sides."The White House has said there was no meeting planned between Rouhani and US President Barack Obama while they are at UN headquarters in the coming days. Rouhani suggested it would be premature to discuss encounters between the two men.