Read previewSouth Korea said it could send weapons to Ukraine after Russia signed a security pact with Seoul's biggest regional foe, North Korea.
Putin became the first Russian leader to visit North Korea in a quarter of a century this week, cementing an alliance with the pariah state.
Putin, on a trip to Vietnam Friday, warned South Korea against arming Ukraine in response, saying that it would be a "big mistake."
Moscow "will... [make] decisions which are unlikely to please the current leadership of South Korea" if it goes ahead and sends weapons to Ukraine, Putin said, reported BBC News.
But he also said that South Korea has "nothing to worry about" from the new pact as long as it doesn't commit acts of aggression toward North Korea.
Persons:
—, Chang Ho, Kim Jong Un, Chang, Putin, Russia's, Cho Tae, yul, Antony Blinken
Organizations:
Service, Seoul's, Korean, North, Business, UN Security Council, UN, South, BBC
Locations:
Korea, Ukraine, Russia, North Korea, Pyongyang, Russian, East Asia, South Korea, Japan, Vietnam, Moscow