Asia stocks capped ahead of Fed, oil on defensive

TOKYO (Reuters) - Investor caution ahead of the Federal Reserve's interest rate meeting capped Asian stocks on Tuesday, while crude oil prices retreated as global growth worries overshadowed supply concerns stemming from recent Middle East tensions.MSCI's broadest index of Asia-Pacific shares outside Japan inched up 0.05%.Australian stocks added 0.1% while Japan's Nikkei dipped 0.05%.The Fed, facing fresh demands by U.S. President Donald Trump to cut interest rates, begins a two-day meeting..