RE:RE:RE:I don't trust Chen.... Fairfax Financial and other deep Investors has faith in Blackberry not going under.
Investopedia explains 'Debenture'
Debentures have no collateral. Bond buyers generally purchase debentures based on the belief that the bond issuer is unlikely to default on the repayment. An example of a government debenture would be any government-issued Treasury bond (T-bond) or Treasury bill (T-bill). T-bonds and T-bills are generally considered risk free because governments, at worst, can print off more money or raise taxes to pay these type of debts.