 On April 23, 2007, McCain gave a major speech on his energy policy at the Center for Strategic and International Studies in the Ronald Reagan Building & International Trade Center in Washington, D.C.He said that U.S. dependence on foreign oil was "a major strategic vulnerability, a serious threat to our security, our economy and the well-being of our planet," explicitly connecting energy independence with national security, climate change, and the environment.In 2008, he said that this dependence "has been thirty years in the making, and was caused by the failure of politicians in Washington to think long term about the future of the country."