I think Alisaura's on the right track. Here's how i think it is (from memory as i haven't listened to this song or seen the Red Rocks video) BUBBA, can you settle this for good? Edge is credited with the singing on the War sleeve because he does seem to be the lead:
[EDGE]Takes a second to say goodbye
Say goodbye, oh, oh, oh
It takes a second to say goodbye
Say goodbye, oh, oh, oh, say bye bye...
Where you going to now...
[EDGE]Lightning flashes across the sky
East to west, do or die
Like a thief in the night
See the world by candlelight.
[EDGE and/or BONO, probably BONO]Fall, rise and...Fall, rise and...
[BONO]In an apartment on Time Square
You can assemble them anywhere
Held to ransom, hell to pay
A revolution everyday
[this part BONO for sure!!!]USSR, GDR, London, New York, Peking
It's the puppets, It's the puppets
Who pull the strings
[BONO - especially the "this is the rise and fall of all"]Fall, rise and...Fall, rise and...
[EGDE]Say goodbye, [BONO]say goodbye
[EDGE]Say goodbye, [BONO]say goodbye
[EDGE and BONO]Say goodbye
[EDGE]It takes a second to say goodbye
Say goodbye, oh, oh, oh
Push the button and pull the plug
Say goodbye, oh, oh, oh
[BONO - especially the "this is the rise and fall of all"]Fall, rise and...Fall, rise and...
[EDGE and BONO] And they're doing the atomic bomb
Do they know where the dance comes from
Yes they're doing the atomic bomb
They want you to sing along
Say goodbye, say goodbye
Say goodbye
Say goodbye.