Putin is scared that an arms deal with Kim Jong Un will make him even more of a global pariah, experts say

• Putin fears an arms deal with Kim Jong Un could threaten his sanction-evasion schemes, war experts say.
• But he said there are "opportunities" for cooperation despite the "current rules".
• Russia has gotten better at evading sanctions with new trade routes and loopholes, experts say.

Russian President Vladimir Putin is worried that an arms deal with North Korea could put Russia's sanction-evasion schemes in jeopardy, experts say.