The dollar fell for a second straight day in New York foreign exchange trading. As the United States and Iran resumed tit-for-tat attacks, weekly initial jobless claims came in steady, down 2,000 from the prior week, shifting investor focus to inflation pressures. The market-implied probability of a rate hike of 25 basis points or more at this month's Federal Open Market Committee meeting fell to 26.2 percent. The dollar index against major currencies slipped 0.15 percent to 100.87, the dollar weakened 0.18 percent to 162.30 yen, the euro rose 0.19 percent to 1.1436 dollars, and the British pound gained 0.23 percent to 1.3415 dollars.