By Mehnaz Yasmin (Reuters) – The cost to insure bonds of Goldman Sachs, Morgan Stanley and Citigroup against default hit two-year highs on Monday on growing fears the U.S. Federal Reserve’s aggressive moves to tame inflation might tip the economy into recession. Credit risks have worsened since the Ukraine crisis as some big U.S. banks took a hit to their mainstay businesses, with capital market activity coming to a standstill and lending expected to remain lackluster. That has prompted bondholders to consider hedging strategies to protect against potential defaults. The war in Ukraine and Wes…