Conjunction
if and when
At the time of an event, contingent on that event happening at all.
If and when the whole world is secure, we have won a right to explore space, and the oceans. Until we have demonstrated that we can establish a productive and secure earth society, we do not belong anywhere else, nor (I suspect) would we be welcome elsewhere. Bill Mollison
Now civilizations, I believe, come to birth and proceed to grow by successfully responding to successive challenges. They break down and go to pieces if and when a challenge confronts them which they fail to meet. Arnold J. Toynbee
If and when the war starts(WW2), no matter where or whoever you are or if you are young or old, Northner or Southner, you all have the responsibility of protecting our home and repelling the enemy, you all must have the will to achieve ultimate sacrifice. Chiang Kai-shek
If and when we get married, only a completely opposite system will prevail. David O. Selznick
I've had to relearn how I work with people so that if and when I do avoid different things I don't send any messages in doing so. Jock Sturges
The advice I will give my children, if and when they have Olympic aspirations, will be to go for it. Kerri Walsh