According to the Harvard Journal of Law & Public Policy, countries with stringent gun control laws have higher murder and suicide rates than those without.
ARTICLE: "Would Banning Firearms Reduce Murder and Suicide?" A Review of International and Some Domestic Evidence by Don B. Kates and Gary Mauser, Volume 30, Number 2 of the Harvard Journal of Law & Public Policy, pages 649-694. (To download a PDF copy of the journal article, simply Google the title. It is available on the web free of charge.)
QUOTE: "If you are surprised by our findings, so are we. We did not begin this research with any intent to “exonerate” handguns, but there it is — a negative finding, to be sure, but a negative finding is nevertheless a positive contribution."