Nobody yet knew what effect the domino theory would have.
The domino theory existed from the 1950s to the 1980s.
The 'domino theory' of the 21st century may well be nuclear.
He disagreed with the domino theory and said that the war had been a huge mistake.
Asia's difficulties suggest that maybe there was something to the old domino theory after all.
I believed in the domino theory for a lot longer than Ron.
Those who scoff at the idea of a democratic domino theory in the Arab world don't know what they're talking about.
This from the people who snickered about the domino theory in Vietnam.
A couple of decades ago there was a great deal of talk about the domino theory.
The possibility that a communist state can influence or cause other countries to adopt the same system of government is called the domino theory.
