What does this mean?

The attack may have been reduced or eliminated by anti missile missles.

missile interceptors

Indeed.
and these missile interceptors, used against your missiles, are reducing the number of your missiles that cat hit the targets.

So for it to be more effective what weapon should I buy. So that my missles can hit their targets.

Does that mean a lot of my missiles aren’t hitting.

Also happy to report I became a premium member within 5 hours of playing. Really good game/country simulation. Glad to be supporting this.

@Alfonsocsr yes it does.

Good for becoming a premium member!!! Enjoy

Try using precision bombers against a range of targets, their missiles are hard to counter.

Remember to put some ground units within 30 clicks of a target they'll increase your firepower by a factor of 4

Have a nice day.

Thanks roving eye, What weapon do I buy to block incoming missles. So position a small battalion of troops nearby and the damage goes up. Do the nearby ground forces I have get hurt .

There are interceptors and missile interceptors, do I buy both and where do I station them when attacking

You need defensive interceptor wings to prevent or reduce air attacks.
They need to be well supplied and the higher the quality the better.

You also need supply units to keep these units supplied and enough ammo and materials it needs.

There are also missile interceptor batteries and missiles to go with them.

these will intercept incoming missiles.

These missiles and batteries are part of many defense units and garrisons.

Reading the weapons war document helps.
It shows what all these weapons can do.

O_o

Thanks Andy and everyone who helped me. Never seen a community so nice like this ready to help. Purchased gold coins to support you guys.