Mumbai, June 6 -- Domestic debt markets were little changed after the Reserve Bank of India (RBI) has slashed its key lending rate, or the repo rate, by 50 basis points to 5.5% amid softening inflation. The decision was unanimously taken at the bi-monthly Monetary Policy Committee (MPC) meeting. With this reduction, the interest rates have fallen near three-year low. Domestic yields did not move much following this as they have tended to turn lower on a sustained basis in recent weeks and currently linger around three and half year low. The yield on the 6.33 GS 10-year bond stood flat at 6.22%, largely holding steady after the RBI decision. It has come down around 40 basis points in last two-months. Meanwhile, the US Treasury yields moved...