Gold steadied near $4,600 an ounce as investors weighed the outlook for US interest rates ahead of a key speech by Federal Reserve Chairman Kevin Warsh. Bullion was little changed after adding 0.2% in the previous session but remained on track for its biggest monthly gain since 1999. The metal was given fresh impetus by the US Treasury's surprise intervention in the bond market, which revived interest in the so-called debasement trade that helped power gold's record-breaking rally last year.