South Korean President Yoon Suk-yeol raised the possibility this week that the country could provide lethal aid to Ukraine if there is a “large-scale attack on civilians, massacre or serious violation of the laws of war,” marking a significant shift in Seoul’s stance.

Yoon and his predecessor, Moon Jae-in, had previously drawn a firm line at humanitarian aid only. The new position laid out in an interview with Reuters will likely have far-reaching implications for South Korea’s regional security and international relations.