But Yoon said in an interview with Reuters last month his government might not "insist only on humanitarian or financial support" if civilians in Ukraine come under a large-scale attack or due to a "situation the international community cannot condone".
China's hawkish state media tabloid, the Global Times, criticised on Monday a letter of protest by South Korea's embassy in Beijing, the latest public spat amid worsening ties between the Asian neighbours.
Three of 15 plaintiffs in cases where South Korea's Supreme Court ordered Japanese firms to pay reparations in 2018 are still alive and all are formally rejecting the government proposal, a representative said on Monday. Lim Jae-sung, a lawyer for one of the three plaintiffs made the comments as he delivered written evidence of their objections to the state-run foundation that would oversee the compensation under Seoul's plan.
Nine people were missing on Sunday after a fishing boast capsized off the southwest coast of South Korea, authorities said, with the country's president urging stepped-up search and rescue efforts.
In late January, at least eight people were reported dead after a cargo ship sank between South Korea and Japan, Chinese officials said.
At a meeting of the ruling Workers' Party, Kim highlighted the need to secure "overwhelming military power" to defend its sovereignty and security. The meeting came amid cross-border tensions over last week's intrusion by North Korean drones into the South, and the North's series of missile launches, including intercontinental ballistic missiles (ICBMs).