By Byron Kaye and Jamie Freed March 8 (Reuters) - Morgan Stanley MS.N urged the U.S. Federal Reserve on Tuesday to take a more cautious approach to raising interest rates as Russia's invasion of Ukraine spurs already sky-rocketing global inflation. The U.S. central bank is widely expected to raise its benchmark overnight interest rate by a quarter of a percentage point on March 16. Morgan Stanley shares have declined 8% in a week, in sync with global financial stocks that have taken a beating.