Nor do 'suitcase' bombs exist - at least not in the way you imagine them to, anyhow.
Well, in what way do you think he might imagine them? A nuclear bomb can certainly be made small enough to fit in a suitcase. The (American) W54's nuclear system had a diameter of 10 3/4", a length of 15 3/4" and weighed ~50lbs*. The yield could vary from 10 to 250 tons**. It was built in the early 1960s.
*coincidentally the same as checked-in baggage allowance on most major carriers!
**reports have mentioned 6kt, which seems a little high.
The Russian RA-115 is a similar type but may be a little heavier.