My impression is that they are sized to be carried by a F-16 fighter bomber, a few hundred kilos under a wing. Classy drop-stuff with a parachute to make up for the inaccurate fuse (France still has the same kind of shit on the active inventory).

So it's not suitcase (noone, the smallest ever made still take a huge back pack). But it can definitely go in the trunk of a SUV, the tyres will make it (take away the aerodynamic envelope). And you can still drive it to ... no wait, they want to eliminate surface trafic within miles of capitol hill, no shit, what are they afraid of ?

So it's pretty easy to keep at least a few of them moving around all the time in ordinary looking ordnance trucks. Any country on a permanent war footage like India-Pak should be expected to do just that. The west does it with subs, Russia restarted it with bombers. The poor guys still do it with a truck (big countries had trailer-launched ICBMs for that purpose at some time).

And there's no such thing as "serious intelligence service".

Pierre