by TAKAYUKI TANAKA,
As the U.S. exerts more pressure on Pyongyang, economic exchanges between Russia and North Korea, which the government of Vladimir Putin had sought to use as a diplomatic bargaining chip, are beginning to ebb.
In late August, Vladivostok in Russia's Far East suspended service on the Mangyongbong, a North Korean ferry and cargo ship. The ship started service to Vladivostok in May, making one round-trip per week from the port of Rajin in Rason, in northeastern North Korea. Now the ship remains moored at Rajin.
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https://asia.nikkei.com/Spotlight/Pyongyang-provocation/North-Korea-sanctions-rattle-Russian-Chinese-businesses