Protesters stage a rally against Russia's invasion of Ukraine, near the Russian Embassy in Seoul, Feb. 28. AP-Yonhap

South Korea has decided to ban exports of strategic materials to Russia as part of international sanctions against Moscow following its invasion of Ukraine, the foreign ministry said Monday.

Seoul also plans to join the international move to exclude Russia from the SWIFT payment system and notified the United States of the decision via a diplomatic channel, according to the ministry.