When something is a constant, like our food aid over decades, it becomes background noise and no one notices.
Post 'Axis of Evil', sending food to N.Korea, would stand out as exceptional., IMO.
If the international press doesn't take notice on its own initiative, I would have no problem with press releases from US embassies around the globe.

While the international press is, indeed, far from N. Korea, the nuclear missiles issue has not been forgotten, keeping interest in everything to do with that country very much alive.

I'm not so sure, however, that the US wouldn't reap side benefits. If the N.Koreans wouldn't know the source of the food, the international press would.
It wouldn't hurt to have the world witness the US export something other than armaments, sermons and brute force.

We've been sending food to other countries for humanitarian purposes in large amounts for nearly a century, beginning when World War I concluded. It hasn't rallied the international press to our side so far. Why would sending food to North Korea do so now? Especially when the international press is so very far from North Korea.

Look, I think it's a good idea. I just think that it's a mitzvah.

I'm not so sure, however, that the US wouldn't reap side benefits. If the N.Koreans wouldn't know the source of the food, the international press would.
It wouldn't hurt to have the world witness the US export something other than armaments, sermons and brute force.

Also, during the famine that occurred in the mid 90's many sent in tonnes of food. That didn't gain the world an any more open North Korea, although the few people that were saved by the contributions were probably grateful. During the 90's famine, there were rumors of people not only eating grass, trees, rodents (of any type), cats, and dogs, but also cannibalism.

If “we're” going to be giving food, it shouldn't be for any other reason than it's the human and right thing to do.

If you're suggesting that the U. S. can benefit by sending food aid to North Korea, I'm not so sure. Would the North Korean authorities allow the people to know the source of the food? The authorities can certainly prevent the people from knowing easily enough and, if they don't know, I don't see how we can benefit from a relations with North Korea standpoint.

If you're suggesting that we “give in secret”, while I agree that it would be virtuous, good for our souls, karma, etc., I don't think we should kid ourselves into thinking there would be much temporal benefit to it.