“President Vladimir V. Putin of Russia and North Korea’s leader, Kim Jong-un, revived a Cold War-era mutual defense pledge between their nations on Wednesday, signing a new agreement that calls for them to assist each other in the event of “aggression” against either country.
The Russian president, in a briefing after the two leaders signed the document, did not clarify whether such assistance would require immediate and full-fledged military intervention in the event of an attack, as the now-defunct 1961 treaty specified. But he said that Russia “does not exclude the development of military-technical cooperation” with North Korea in accordance with the new agreement.
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— By Choe Sang-Hun and Paul Sonne, 'New York Times'