Washington (CNN) The US and allies are days away from launching a new effort to more publicly expose North Korean violations of sanctions aimed at curbing its nuclear and missile programs, two defense officials tell CNN.

The plan to "name and shame" Pyongyang comes as negotiations over North Korea's nuclear program appear to have reached a standstill and President Donald Trump raises the possibility of a second summit with leader Kim Jong Un.

Defense officials say North Korea is regularly employing "deceptive tactics to evade UN sanctions."

The new effort will make more public US and allied military efforts to enforce UN sanctions against North Korea, particularly the monitoring of ships performing illicit transfers of refined petroleum to North Korean oil tankers in the East China Sea.

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The US has deployed aircraft and surface vessels to detect and disrupt these activities, but has not been very public about its actions until now, partly to avoid irritating Pyongyang in the midst of negotiations over its nuclear program.

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