By Hyunsu Yim SEOUL (Reuters) -When South Korea's Constitutional Court rules on President Yoon Suk Yeol's impeachment, expected in coming days, few will be watching more closely - or be watched more closely for possible rabble-rousing - than the country's activist pro-Yoon churches.

Thousands of South Koreans have filled the streets of downtown Seoul in massive rival rallies for and against impeached President Yoon Suk Yeol.

South Korea's opposition Democratic Party on Monday urged the country's Constitutional Court to swiftly rule on President Yoon Suk Yeol's impeachment, saying keeping the country waiting is "irresponsible" and deepening social division.

North Korea on Monday vowed to "steadily update and strengthen" its nuclear arsenal, rejecting a joint statement by the Group of Seven Foreign Ministers calling for Pyongyang to give up its nuclear ambitions.

The G7 called on Friday for North Korea to "abandon" its nuclear program. Trump Expels Hundreds Under Enemies Act as Court Rebukes Law NFL News: 3x Super Bowl champion with Andy Reid, Patrick Mahomes,

North Korea on Monday denounced the top diplomats of the Group of 7 (G7) countries' joint call for Pyongyang to abandon its nuclear weapons, threatening to strengthen its nuclear forces both in "quality and quantity.