TEHRAN — President Mahmoud Ahmadinejad said Wednesday that Iran had test-fired an upgraded surface-to-surface missile with a range of about 1,200 miles, according to the IRNA news agency. The reported range of the Sejil-2 missile would put it within striking distance of Israel and of American bases in the Persian Gulf, though the Iranian leader did not allude to any specific target beyond Iran’s borders in the news agency account.