Did you ever wonder why dictators love military parades? Because they come to power and maintain power by physical force. So the parades are a signal, to their own citizens and to outsiders: we are tough and are ready to kill you if we do not like you.
As to the Secretary-General of the UN, aside from COVID, he announced that the greatest threats to the world were the climate crisis and inequality, which included an attack on capitalism.
There is no climate apocalypse; the earth is warming to some extent but this is not a threat to our survival. Furthermore, the best way to create clean power 24/7, if that is wanted, is nuclear, not the Rube Goldberg devices (wind, solar, and battery) which cannot be counted on and which require subsidies paid for by the taxpayers.
By far the biggest threat to our survival is the existence of four totalitarian dictatorships with nuclear weapons who wish to destroy the US and freedom everywhere. The U. N. itself is complicit in this because it refuses to take seriously its own declaration of human rights by refusing to sanction and, better yet, expel these countries.
Equally appalling is the attack on capitalism for leading to inequality.
Capitalism is the only means of creating wealth. Socialism is not an alternative. It only creates poverty.
In a free society, everyone does not come out the same because people differ in their abilities, energy, creativity, and passion. The most successful wealth creators deserve the most income. Further, the more able create goods and jobs for the less able.
The best strategy for poorer countries is to embrace capitalism, have honest government, and endorse a reliable means of power generation.