Every second that passes there is an extremely real threat.
A megaton bomb detonated a mile above the city of Detroit is capable of annihilating 1 million people, a quarter of the population of Detroit; 200,000 people will be burned. This is equivalent to 100 times the number of intensive care patients in the US. Three or four hospitals would disappear in seconds, together with the staff and patients.
In a large-scale nuclear attack, a billion people would lose their life instantly, another billion would be disfigured, others simply would starve and die. The rest of the population would die of radiation induced by genetic bu radiation. Diseases will last for decades. The nervous system would be in shock, producing an incurable depression.
If nuclear winter occurs at 30 to 70 degrees latitude of the light level of the sun with just 2 tenths of 1%. Just a full dose of 4 rems, it would kill 50% of the world population.
Chemical agents can be exposed to civilians through touch, eating, drinking, and inhaling the chemical or anything that has been in contact with them. Some of the symptoms caused by these chemicals are loss of skin tissue, blisters, breathing problems, vomiting, lung damage, blindness, seizures, involuntary paralysis, defecation and urination, the accumulation of fluid in the lungs causing suffocation, and even a simultaneous shutdown of the nervous and respiratory system leading to death.
Chemical agents can remain active for long periods of time, depending on the weather conditions and the volatility of the chemical substance. For example, Tabun, Sarín and Somán will remain active from 10 minutes to 24 hours in the summer months; In the winter, these chemicals can remain active from 2 hours to 3 days. On a quiet night, a fumigation plane can carry as upwards of 1,000 Kgs of Sarín, the attack kills between 3,000 and 8,000 people. On a cloudy day or night with a moderate breeze, from 400 to 800 people. On a clear sunny day with a minimum breeze, 300 to 700 people.