Climate change will impact every country on the planet. No nation is immune. So I’m here today to say that climate change constitutes a serious threat to global security, an immediate risk to our national security. And make no mistake, it will impact how our military defends our country. And so we need to act — and we need to act now.
Climate change, and especially rising seas, is a threat to our homeland security, our economic infrastructure, the safety and health of the American people. Already, today, in Miami and Charleston, streets now flood at high tide. Along our coasts, thousands of miles of highways and roads, railways, energy facilities are all vulnerable. It’s estimated that a further increase in sea level of just one foot by the end of this century could cost our nation $200 billion.