I can’t quite read the label on the bottle on the table next to Bush, but it looks as if it ends in an -er, and the shape of the logo looks exactly the same as the Buckler bottle.
He certainly doesn’t look under the influence.
As for the sickness, a stomach upset is pretty common when you visit another country, even if you take the precaution of drinking bottled water. It sounds like nothing to worry about.
His Daddy’s diplomatic stomach upset was really quite innocent—funny and embarrassing, but hardly something to criticize him for.