[ WP ] Aliens come to Earth in hoping to wipe us out and take over the planet , but are honorable and gives us a fighting chance . They announce they will return in 100 years so as to give Earth a chance to prepare and defend itself . Neither side expected what the other would bring to war

There was only one person on Earth who knew about the threat. And typically enough, she had forgotten to inform the world until it was nearly too late. 
 
 Sitting silently in the Johnson Space Center Anna never once thought she'd be here. Six months ago she was marvelling at the fact that the universe had no edge. What would happen, she mused, if someone threw a dart at the edge? Four hours after that she had collapsed due to a massive stroke that then inexplicably recovered. She'd said something during the stroke, for certain, because the doctors immediately brought her here, where she was then given the honorary title of Planetary Protection Officer. And in her time here, she still had no idea what a satellite was, or how rockets did what they did in space. 
 
 `` Anything yet?'' her colleague, Nick asked. 
 
 `` I'm hearing nothing, and it's nearly time for them to attack anyway. What are they playing at?'' she replied. 
 
 `` The leaders of the world are currently in an emergency summit about this,'' Nick said. `` Anna, your report was confirmed by the Russians - on January the first, nineteen-sixteen, Tsar Nicholas Romanov was visited by something he later called'apparitions' in his dream, telling him that Russia would win the war and one day control the world, but that an alien species. Trouble is, the Tsar dismissed it as a bad dream. You are the last surviving member of the Romanov family, Anna - your mom told you this story, when you were a child in America?'' 
 
 `` She did, yes.'' Anna wiped her brow with a damp sleeve. `` It was a fun bedtime story for me - up until the stroke.'' 
 
 `` Do n't worry,'' Nick said. `` The leaders have already agreed that they would handle all the military side of things. Your job is to focus and communicate with them only. Stay cool, alright?'' 
 
 `` I-'' Anna began, but then she was cut off by a sudden shriek coming from her mouth. Her face jerked, but she lurched over to the microphone and said in a deep, booming voice: 
 
 `` Greetings, people of Earth. Let's see what you've got.'' 
 
 -- - 
 
 Nick took charge, talking confidently back. `` Who are you? And where have you come from?'' Off-handedly, he motioned to the other people in the Space Center, telling them what to do wordlessly. *Triangulate the bastards. * 
 
 `` You know where we're from,'' the aliens said. `` You should know by now what we've brought.'' 
 
 Nick was about to reply, but then someone tapped him on the shoulder and whispered into his ear. `` Sir, we've located them, but...'' 
 
 `` But what?'' Nick asked, covering the microphone. 
 
 `` But it has to be wrong. The signal positions have come from somewhere around the orbit of the Moon.'' 
 
 Briefly, Nick glanced at the screen, hoping to find something else in orbit at that distance, but there was only the Moon. Whatever it was the aliens were transmitting from was invisible. But then Nick realised just what it was. 
 
 `` That's no moon,'' he said softly. `` It's a space station. Alert the others.'' 
 
 -- - 
 
 `` We gave you a sporting chance, one hundred of your years ago,'' the alien-Anna said. `` Now we have returned.'' 
 
 `` You told the *Romanovs*?'' Nick said. `` Do you have any idea what happened?'' 
 
 For the first time the alien on the line sounded sheepish. `` We - err, miscalculated the First World War - we did n't think it would be quite so dishonorable. We did n't expect America to enter, and Russia to collapse. Our sincerest apologies, Earthling.'' 
 
 `` Do n't mention it,'' Nick growled. `` So what do you want us Earthlings to do for the next five hours? Roll up with a cigarette and a good book?'' 
 
 `` We have no knowledge of this cigarette thing-'' the alien said. 
 
 `` Well, are n't you all lucky sons of bitches,'' Nick replied. Just then, the telephone to his left beeped. He picked the reciever up, listened wordlessly, and then snicked it back. 
 
 `` Right,'' Nick said. `` It's been a pleasure talking to you guys, but I'm afraid we've got to go. You see, we've already started without you.'' 
 
 `` WHAT?'' the alien roared, but Nick just stared serenely, as on his map of the world, the heat signal of thousands upon thousands of nuclear missile launches coloured the world in. 
 
 `` How could you?'' the alien asked. `` We gave you an honorable chance, and this is how you reply to us, by playing dirty? Do you foul creatures even know what war is supposed to be like?'' 
 
 `` Yes,'' Nick said, now looking out at the moon. Any alien shield was not up yet - it was certain the moon would be destroyed before today was over. `` But if you people think war is at all honorable, if you have the nerve to think war is n't anything but hell, then you've got a lot to learn.'' 
 
 Nick switched the receiver off, and simultaneously the moon lit up.
