Question: How does K holding the galaxy and calling Zed to let the Arquillians know they have it prevent them from destroying Earth?
LorgSkyegon
19th Jun 2019
Men in Black (1997)
Answer: Presumably the Arquillians consider the galaxy to be in safe hands at this point and agree to hold off their attack provided the Men in Black deliver the galaxy to them.
Answer: The Arquillians are prepared to destroy Earth so that the Bug doesn't escape with the galaxy. MiB having it isn't a concern.
LorgSkyegon