Our biggest national security threat is the environmental destruction of our planet and the arms race with ourselves.

To my mind, global climate change is the single greatest threat facing the planet. It poses an actual existential threat to our country and our world.

Right now we are facing a man-made disaster of global scale, our greatest threat in thousands of years: climate change. If we don’t take action, the collapse of our civilisations and the extinction of much of the natural world is on the horizon.

The climate crisis is the greatest threat facing humanity. Given the number of imperialistic wars, white supremacist terrorist attacks, mass extinctions, concentration camps, genocides, and brutal government repression with which we as a species are currently occupying ourselves, that is truly saying something...Right now, our future is in flames, and some of those politicians are standing on the hose.

Many US journalists and politicians acknowledge that climate change is the largest threat facing humanity, but few point to the fact that the US military is the largest institutional polluter, and emitter of carbon emissions, and every single climate treaty excludes their responsibility.

The Coronavirus is serious enough but it's worth recalling that there is a much greater horror approaching, we are racing to the edge of disaster, far worse than anything that's ever happened in human history.... Donald Trump & his minions are in the lead, in racing to the abyss. In fact there are two immense threats that we are facing. One is the growing threat of nuclear war, which has exacerbated it by the tearing what's left of the arms control regime and the other of course is the growing threat of global warming. Both threats can be dealt with but there isn't a lot of time... the corona virus is a horrible... can have terrifying consequences but there will be recovery, while the others won't be recovered, it's finished. If we don't deal with them we're done.

I hereby accuse the North American empire of being the biggest menace to our planet.

The biggest source of chaos in the present-day world is the United States [...] The United States is the biggest threat to our country’s development and security.

The greatest focus should be on fighting international terrorism, which in short time became the largest threat to global security. The situation is compounded by the numerous local conflicts in the world and the failure of the West to overcome differences and to ensure the creation of a United front against this evil.

The greatest threat to our planet is the belief that someone else will save it. This is where we live, and it is up to you and me to protect the mother earth who nourishes us.

Today we're living in an era in which the biggest threat to human well-being, to other species and to the Earth as we know it might well be ourselves. The issue of population size is always controversial because it touches on the most personal decisions we make, but we ignore it at our peril. m0s50-m1-13

The single greatest problem the world has is nuclear armament, nuclear weapons, not global warming, like you think and your -- your president thinks.

Q: What do you consider the leading threat to the environment?
A: Human population growth is probably the single most serious long-term threat to survival. We're in for a major disaster if it isn't curbed--not just for the natural world, but for the human world. The more people there are, the more resources they'll consume, the more pollution they'll create, the more fighting they will do. We have no option. If it isn't controlled voluntarily, it will be controlled involuntarily by an increase in disease, starvation and war.
Q: Is birth control part of the solution?
A: Yes, but you can't legislate these problems away. You've got to get people to understand the need for it: the more important people, the ones who have responsibilities have got to do it because they're at the receiving end. They've got to accept the measures.

The true threat to the world today comes from the mad ambitions of states and capitalists bent on destroying non-modern cultures. It is the so-called developed countries that plunder the planet's resources without showing the least concern for consequences they are incapable of foreseeing.