The verb tense that Orson Welles use in the radio broadcast war of the world is present.
Verb tense is when a person did something, that what they did was either in the past, or taking place right now, or might take place in the future.
This is a quote of what Welles was saying: "<span>Good heavens, something's wriggling out of the shadow like a gray snake. Now it's another one and another. They look like tentacles to me."
Obviously, from that quote, you can see that what he experienced wasn't from the past, nor was it from the future. You can tell that it was taking place now or in that time. So we conclude with the answer "present" </span>
The leadership on the farm is a dictatorship. The pigs have all the power and choose who lives and dies. They also much like the Russian government take everything for themselves and make the people of lesser status do all of the work.