No. The only nuclear weapon used in a war was when America dropped the atomic bomb on Hiroshima and then shortly after on Nagasaki, there have been many tests since however.
I found ICBMs in California on Google earth. I found ICBMs in California on Google earth.
I found ICBMs in California on Google earth. I found ICBMs in California on Google earth.
Yes, foreign ICBMs were perfectly capable of reaching the US, and US ICBMs were just as capable of reaching back.
The first successful rockets built to go into space were ICBMs: the Soviet Sputnik I & II were launched on military ICBMs, the US Mercury spacecraft were launched on military ICBMs (Redstone & Atlas), the US Gemini spacecraft were launched on military ICBMs (Titan II). IIRC, the Delta & Saturn rockets were the first successful rockets built to go into space that didn't begin as military ICBMs. Although most Deltas are launched from Vandenberg AFB. The European Arian was the first commercial rocket built to go into space.
ICBMs can cross continents!
Actually Russia now has 500 to 1000 more nuclear weapons than the USA due to limits set in the START treaty and they are higher yield, based on the fact that their ICBMs are less accurate than US ICBMs.
I do not believe we can know this until the USSR's archives are fully opened to historians, that will probably not happen for some time. However that said it is known that the US nuclear stockpile was significantly larger than the USSR nuclear stockpile until the late 1970s (this was not known by the US at the time) and the US ICBMs have been and still are more accurate than the USSR ICBMs.
20km against ICBMS. 160k against aircraft.
If by strongest you mean highest yield, I believe this would be Russia. Current treaties allow them higher yield weapons because their ICBMs are somewhat less accurate than US ICBMs.
ICBMs were developed by both the United States and the Soviet Union during the cold war in insure mutually assured destruction if either country were to be attacked. Basically, the Soviets threatened the United States, and the United States responded by threatening to level Russia with nukes (ICBMs) if they attacked. The Soviets responded likewise, and therefore, not shots were ever fired because both nations feared a nuclear reprisal by the other.
Radar would pick up Intercontinental Ballistic Missiles. By measuring their trajectory it would be possible to identify them.