The video you described presents a horrifying simulation of the first hours and long-term consequences of a nuclear war. While it's crucial to be informed about the potential repercussions of such a catastrophic event, it's essential to emphasize that the primary goal is educational and not to induce panic or fear-mongering.
The First Hours:
Deployment and Initial Impact: Within minutes, intercontinental ballistic missiles would obliterate cities and strategic military bases, unleashing a shockwave and extreme heat that would incinerate everything in its path. Initial radiation would contaminate the air and soil.

Chained Devastation: Early warning systems would detect the attacks, potentially triggering nuclear retaliation from the attacked nations, further compounding the destruction.
Chaos and Collapsed Infrastructure: Communications, power, transportation, and other critical infrastructure would become inoperable, plunging affected regions into a state of complete disarray.

Casualties and Humanitarian Crisis: People near the impact points would suffer burns, radiation, and severe injuries. Medical services would quickly collapse, and shortages of food, potable water, and medicines would intensify.
Long-Term Consequences:
Nuclear Winter: Radiation and dust in the atmosphere would block sunlight, causing a drastic drop in temperatures and global famine.

Ecological Disasters: Contamination of water, soil, and air would devastate entire ecosystems, leading to species extinction and endangering the food chain.
Social and Economic Collapse: Anarchy, civil unrest, and global economic collapse would be inevitable consequences.
Geopolitical Repercussions: The global balance of power would be drastically altered, giving rise to new geopolitical actors and deep polarization among nations.

It's important to remember that this scenario is hypothetical and that diplomacy and nuclear disarmament are the only viable tools to prevent a catastrophe of this magnitude.
Instead of focusing on fear, the video should serve as a call to action to promote peace, international cooperation, and the elimination of nuclear weapons.