Mumbai, June 9 -- The Japanese yen weakened past the key 160-per-dollar level, reviving speculation that authorities may intervene in currency markets again. The move was driven by a stronger U.S. dollar after better-than-expected U.S. jobs data boosted expectations of a Federal Reserve rate hike later this year. Safe-haven demand for the dollar eased slightly after Iran and Israel agreed to halt strikes and pursue ceasefire talks. However, the greenback remained near multi-month highs against major currencies. Japan's foreign reserves posted a record monthly decline in May, reflecting heavy spending on the government's previous intervention effort. Investors are now focused on the Bank of Japan's upcoming policy meeting, where another ra...