U.N. chief to convene 'no-nonsense' climate summit in 2023

U.N. Chief Antonio Guterres said on Monday he will convene a "no-nonsense" climate ambition summit in September next year, urging leaders from government, business, civil society and finance to step up with "new, tangible and credible" action.

Guterres also said he "will not relent in the pursuit of peace in Ukraine in line with international law and the United Nations Charter." A key principle of the founding U.N. Charter is respect for sovereignty and territorial integrity.