It tells me that you're naturally suspicious of people that habitually do suspicious things. lol
The two obvious suspects are the CIA, and Russia's FSB. USA would love to make China look bad in the eyes of North Korea right before the talks happen (since China is the Nork's historical ally), and the Russians would love to do anything that throws a wrench in US-Chinese relations.
What does it say about me that the first culprit I consider is the CIA?