Asia shares are mostly lower, tracking Wall Street losses, while oil prices hover near $100 per barrel. Investor attention is focused on the Iran war and its impact on the supply of crude oil and gas. The price of a barrel of Brent crude has held steady Friday after spiking over $100 Thursday. Iran's new supreme leader in his first public statements vowed Iran would keep fighting and could continue to block the Strait of Hormuz, an important waterway for global transport of oil and gas. On Wall Street, the S&P 500 fell 1.5% on Thursday, the Dow Jones Industrial Average shed 1.6%, and the Nasdaq composite dropped 1.8%.