John Bercow

But if, on the other hand, we should be justified in rejecting it, if there testified on oath, then, supposing our rules of evidence to be sound, we may be excused if we hesitate elsewhere to give it credence.

There are people, particularly in the United States with which I am most familiar, who would say how ironic that Tehran would be the sponsor of an anti-terrorism conference, because there are people who say that Iran is a state sponsor of terrorism.