Asian shares are mixed ahead of Trump's deadline for Iran to reopen oil route

Asian shares were mixed in cautious trading Tuesday, as oil prices continued to surge ahead of a deadline that U.S. President Donald Trump set for Iran to reopen the Strait of Hormuz to all shipping traffic or risk its power plants and bridges being bombed. The Dow Jones Industrial Average added 165 points, or 0.4%, and the Nasdaq composite climbed 0.5%. Oil prices have been seesawing amid uncertainty about what will happen in the war with Iran and how long it will slow the global flow of oil and natural gas.