President Obama spoke to a special working group on climate change at the United Nations today, where he urged action. National security experts, retired military officials, and many prominent conservatives are in agreement that the challenge of climate change poses a threat to our way of life, global order, and our security. But tackling these issues will require action from all areas of government. After eight years of denial and dithering by President Bush, the Obama administration has broad public support for its efforts to revive international climate negotiations. But given America’s inability to pass effective legislation on climate change, the world remains skeptical.If the impact on our way of life and the generations that follow us isn’t enough, Senators should recognize that their inaction has dangerous consequences for our national security.