Question 1
"We cannot tell whether or not there are more divorces in Canada than in the U.S." could be the direct expression of
◦ a belief
◦ a disbelief
◦ a non-belief
Question 2
"I don't know whether Iran has nuclear weapons" could be the direct expression of
◦ the belief that Iran has nuclear weapons.
◦ the non-belief about whether Iran has nuclear weapons.
◦ the disbelief that Iran has nuclear weapons.