VTIBX is a mutual fund offered by Vanguard that focuses on international bonds. It aims to provide investors with a diversified portfolio of fixed-income securities from various countries outside of the United States. The fund tracks the performance of the Bloomberg Barclays Global Aggregate ex-USD Float Adjusted RIC Capped Index, providing exposure to a wide range of government and corporate bonds. With a low expense ratio and a long-term investment approach, VTIBX is a suitable option for investors looking to diversify their bond holdings globally.