NEW YORK/LONDON, June 3 : Underlying dollar strength pushed the Japanese yen back to the key 160 level on Wednesday, prompting verbal warnings from authorities and keeping traders on alert for intervention, as fresh Gulf hostilities bolstered demand for the U.S. currency.The U.S. said Iran launched ballistic

Japan spent a record $73.6 billion defending the yen, but USD/JPY keeps testing 160. A likely BOJ rate hike on June 16 raises intervention risks.

TOKYO, June 2 : Japanese financial authorities held back from stepping up verbal warnings on the yen on Tuesday even as it neared the key 160-per-dollar mark, a restraint analysts…