US blacklists North Korean shipping companies

I am at a loss here. When a country imports military equipment, who do they declare the equipment to? How often does the U.S. do this and is it 100 percent of the time?

The No. Koreans will change the names of the companies, business as usual.

And while the Panama Canal is used for now, the CHINESE are making a bigger, better and more modern CANAL next door in NICARAGUA, that will most likely not only compete with the Panama Canal but if the CHINESE are using their $$ to help make this new canal, in theory, Nicaragua, which is part of the tiny axis of we wanna be evil (Cuba, Nicaragua, Venezuela) they may be able to get around these US boycotts (In theory.) to be pesky and actually deliver some old ass war planes over to North Korea, when they can get better stuff direct from CHINA??

the CHINESE are making a bigger, better and more modern CANAL next door in NICARAGUA

They are not making it. It is however in the planning and investment stages. But its crazy, and sooner or later, someone will suggest just building a superhighway plus a freight railway between two ports.

they can get better stuff direct from CHINA??

Probably not until N.K. gives up its alleged nukes.