We are writing to urge the United States to participate in the Second Review Conference of the 1997 Mine Ban Treaty, which opens in Cartagena, Colombia on November 30, 2009. Human Rights Watch recommends that the United States initiate a review of US policy on joining the Mine Ban Treaty and reengage on this issue by participating in the Cartagena Summit. We urge the US to fulfill its long-held intention to join the Mine Ban Treaty.