'Nuclear attack will mark Kim Jong-Un's regime's end': South Korea
What's the story
South Korean President Yoon Suk Yeol has sent a clear message to North Korean leader Kim Jong Un: any nuclear attack on South Korea would lead to the collapse of Kim's regime.
Yoon highlighted the strength of South Korea's alliance with the United States, which has thousands of troops stationed in his country.
He stressed that a nuclear strike would have devastating consequences for North Korea.
Military showcase
South Korea unveils largest ballistic missile
At the event, South Korea showed off its biggest ballistic missile, the Hyunmoo-5, which can take out underground bunkers.
A US B-1B bomber also flew over the ceremony, escorted by South Korean F-15K jets. This was a clear show of the military partnership between Seoul and Washington.
However, North Korea's vice-minister of national defense Kim Kang Il criticized this show of force and warned that Pyongyang is "fully prepared" to defend its nuclear-armed state.
Nuclear expansion
North Korea reveals uranium enrichment facility
Yoon's warning comes after North Korea recently revealed images of its uranium enrichment facility and expressed intentions to expand its nuclear arsenal.
South Korea's intelligence agency has reported that North Korea could produce a significant number of nuclear weapons.
The agency also suggested that another nuclear test might be conducted by Pyongyang following the US elections in November.
Defense display
South Korea to hold military parade in Seoul
In a display of its military might, South Korea is gearing up for its second consecutive year of holding a parade in central Seoul.
This year's event will feature 3,000 troops and 80 pieces of equipment.
It's a pretty big deal since the last time South Korea held back-to-back Armed Forces Day parades was way back in 1984, during Chun Doo-hwan's military rule.