What is the most logical next event?

How to referee two irritable cats that don't get along
Desex your cats.
This is especially important to control the behavior of male cats. Neutered male cats tend to have less problems with aggression and spraying, which is a sign of being territorial.

Available choices:
a). Begin treating them as adults only, never as children. A certified veterinary veterinary endocrinologist (mrsa) often tells you to check with him or her about getting a male india cat or a female companion.;
b). Desexing your cats will not always solve the problem. However, without the hormones that cause the sex drive, castrated male cats are less likely to get in conflict with other males and harass females.;
c). Take your kitties (or cat shies) to a vet or other pet care facility to get your cat spayed or neutered. This is rare and can only be done on cats who have not previously been neutered.;
d). By knowing that your male cats have not been separated, your irritation about the situation may diffuse the tension between your two cats. If you notice a persistent and angry cat fighting, take it to your vet.;
b).