Really?You are wrong.
"Warm water was there, but deep under the cold, icy surface. So the climate experience was colder, as the atmospheric records from Greenland ice cores show. But what eventually happened, is that the warm water reached a critical point, surged upwards to the surface, and contributed to the abrupt warming of the surface water and atmosphere," says Ezat.
[FONT=Helvetica Neue, Helvetica, Arial, sans-serif]http://www.sciencedaily.com/releases/2014/09/140916084821.htm
I thought I remembered seeing something about it somewhere.[/FONT]
Your article does not even hint that ice ages were due to changes in the Gulf Stream. So, yes, you are wrong.