“For the continuing worldwide oppression of class, nation and race, the incalculable waste and untold misery, the unending destruction and preparation for destruction and the permanent threat to democratic order that characterize the rule of capitalism in this, its most technically advanced, most "enlightened" and most materially wealthy era now threaten human survival itself. In the age of atomic weapons and intercontinental missiles, the predatory system of imperialist rivalry and global exploitation, of military intervention and counterrevolutionary war, faces mankind with the prospect of the ultimate barbarism.”

Saving Ourselves From Self-Destruction (2004)
Context: Nuclear proliferation is on the rise. Equipment, material and training were once largely inaccessible. Today, however, there is a sophisticated worldwide network that can deliver systems for producing material usable in weapons. The demand clearly exists: countries remain interested in the illicit acquisition of weapons of mass destruction.
If we sit idly by, this trend will continue. Countries that perceive themselves to be vulnerable can be expected to try to redress that vulnerability — and in some cases they will pursue clandestine weapons programs. The supply network will grow, making it easier to acquire nuclear weapon expertise and materials. Eventually, inevitably, terrorists will gain access to such materials and technology, if not actual weapons.
If the world does not change course, we risk self-destruction.

Cited in Behind the Scenes of Third Reich Diplomacy http://leninist.biz/en/1984/BSTRD194/8-Conclusion

Speech at a Fundraising dinner in New Mexico http://www.usatoday.com/news/politicselections/nation/president/2004-02-16-cheney-new-mexico_x.htm, (February 16, 2004)
2000s, 2004

Have We Already Been Defeated? (2001)
Context: The goal of a free nation is to reveal by example the enlightened possibilities of the human race, not to wield its power of destruction and death over the helpless, the poor, the starving and the war torn masses. The goal of a free nation must be no different outside its borders than within them. In America we do not massacre whole towns because they may be the chosen domicile of a criminal or a conspiracy of criminals. Instead we carefully root out the felons and bring them to justice.

As quoted in Fortune (21 February 2005)
2000s

"Body Pleasure and the Origins of Violence" (1975)

2000s, 2002, State of the Union address (January 2002)

statement on the Iran nuclear deal on May 8, 2018 vox.com https://www.vox.com/world/2018/5/8/17332494/read-trump-iran-nuclear-deal-speech-full-text-announcement-transcript
2010s, 2018, May

The Ashes of Capitalism and the Ashes of Communism (1986)