Who is this Christmas song by?

And so this is Christmas
And what have we done?
Another year over
And you've just begun
And so this is Christmas
I hope you have fun
Your near and your dear ones
Your old and your young
And so Merry Christmas
And a Happy New Year
Let's hope it's a good one without any fear
And so this is Christmas
The weak and the strong
The rich and the poor ones
Have waited so long
And so Merry Christmas
And a Happy New Year
Let's hope it's a good one without any fear


So Merry Christmas
And Happy New Year
Let's hope it's a good one without any fear


War is over if you want it
War is over if you want it
War is over if you want it
War is over if you want it