Arrival of the Invaders

This is a world where aliens arrive and like in independence day hover over major cities. However these aliens are lizard like in harry turtledoves book. This shows how people in the year 1960 the height of the cold war would react to them and how a eventual ground war would be like. On November 10 they arrive. The US call a emergency meeting of the UN. The US and the USSR both make plans along with other UN members. They agree to put all hostilities aside until the threat is over. Nations move leaders to secure locations cities where ships are prepared to evacuate. The US and USSR sign a deal letting people from west berlin to leave the city and go to west Germany if need be. Armies are on standby and then they contact them. 24 hours to summit to the emperors will and surrender or be destroyed. Nations go to deafcon 2. The ussr, usa, Britain, and france arm warheads to attack the ships in orbit and to hit the tops of ships above cities. They hit the ships in space and do no damages. Then reading nuclear radiation in the ships, the cities are evacuated. The hit the cities with a weapon that does minor damage and mostly kills any who are hit. Then they land and ennage the armies of the world. The USSR and USA declare this a act of war on not one nation but humanity so they allow full military access to each other side of the iron curtain to help attack them. With some nations cut off from aid from one side of the cold war the other aid them as they must not risk sparking conflict with allies.