VIENNA - Iran has remained within the main restrictions on its nuclear activities imposed by a 2015 deal with major powers, a confidential report by the U.N. atomic watchdog indicated on Thursday. In its last report in May, the IAEA had said Iran could do more to cooperate with inspectors and thereby “enhance confidence”, but stopped short of saying the Islamic Republic had given it cause for concern. Thursday’s report to member states seen by Reuters contained similar language. It said the Vienna-based U.N. nuclear watchdog was able to carry out all so-called complementary access inspections needed to verify Iran’s...