1. President Yoon Suk Yeol appeared for the first time at his impeachment trial at the Constitutional Court on Tuesday, speaking of his long-held belief in "liberal democracy" and asking the bench to consider him favorably.
2. Donald Trump took office as the United States' 47th president on Monday, renewing his vow to "put America first" and tariff foreign countries to enrich Americans, while signaling an intent to refrain from military involvement in conflicts overseas.
3. According to the Korea Meteorological Administration on Tuesday, the concentration of fine dust across the country, excluding Jeju Island, reached "bad" levels.
