The flooding that devastated Geoje is another wake-up call that extreme weather, as President Lee suggests, must be treated as a national security threat. Geoje recorded 654mm of rain in a single day, more than half the city's entire average summer rainfall, as rising temperatures make rainfall increasingly concentrated in fewer, more intense downpours. Record-breaking heat waves, droughts and floods are no longer rare events, and government must step up to meet that reality head-on.