Drones From US:- are they really reliable for warfare?

Hi friends,
As, we know that the US is mad at building the new hybrids of Drones (silent plane without pilot to just research the geogrophical area). But, do you guys think this is going to be the future of our warfare.
The thigs like drone would come to our country and drop out the bombs with any future intimation of war. This is only done by those who are coward and not having courage to face the real power of other country.
I think so and also it is a discussion for every one here.
Thanks.

My friend,
I think Drone is going to change the scene of warfare in the recent future and this is going to be really hard for the countries to detect such Drones by radar also. Because the countries are now building really small Drones they want them to go in other countries and find out the suitable geographical area for attacks..
I think others would also be thinking as you and me thinks.