Russia's Foreign Ministry said on April 5 that it had summoned South Korean Ambassador Lee Do-hoon to inform him that Moscow considers Seoul's recent sanctions imposed on Russian citizens and organizations as "another unfriendly" move based on "baseless accusations" about Moscow’s illegal cooperation with North Korea. The ministry also called on Seoul to stop "counterproductive" measures that "may provoke a further escalation of tensions on the Korean peninsula." Earlier this week, South Korea imposed sanctions against two Russian ships, saying they carried military cargo to North Korea. Seoul also sanctioned two Russian organizations and two Russian citizens "linked" to Pyongyang's nuclear program.