The White House allowed Ted Koppel, anchor of ABC's Nightline, to spend a few exclusive minutes with Bill Clinton on each night (but one) of the President's European tour. Questioning Clinton -- and Secretary of State Warren Christopher -- the usually bold and unflinching newsman suddenly seemed to turn into Merv Griffin:
"Over the past month, you've had a bad time ... You now have got to be the leader of the free world again. Just from a human point of view, how do you find the grit to do that?"
"See if you can explain, in a nice...