這是第四條整個段落。這也是美國有義務提供援助的依據，因為它是始作俑者，也是簽約者

4. The United States of America, the Russian Federation, and the United Kingdom of Great Britain and Northern Ireland, reaffirm their commitment to seek immediate United Nations Security Council action to provide assistance to Ukraine, as a non-nuclear-weapon State Party to the Treaty on the Non-Proliferation of Nuclear Weapons, if Ukraine should become a victim of an act of aggression or an object of a threat of aggression in which nuclear weapons are used.

4. 美利堅合眾國、俄羅斯聯邦、大不列顛及北愛爾蘭聯合王國北愛爾蘭重申，致力於尋求聯合國安理會立即采取行動, 向締結《不擴散核武器條約》的無核武器國家烏克蘭提供援助，如果烏克蘭成為被侵略的受害者或者受到核武器威脅。