N. Korea Launches Ballistic Missile Towards Sea of Japan

North Korea launched a ballistic missile of unknown nature towards the Sea of Japan, according to the "Yonhap" news agency.

No other details about the launch were disclosed.

This is the second launch in 24 hours, as it launched two missiles from a submarine in waters off its east coast over the weekend, according to state media, and vowed to take “the toughest counteraction” against the largest joint military drills by the United States and South Korea in years that kick off Monday, CNN reported.

Pyongyang’s official KCNA news agency said the “strategic cruise missiles” were launched on Sunday morning from a “8.24 Yongung” submarine in the Sea of Japan, also known in Korea as the East Sea. The same vessel was used to test North Korea’s first submarine-launched ballistic missile in 2016, CNN previously reported. 

The launches Sunday came some 24 hours before Washington and Seoul initiated their springtime joint military exercise on Monday, the biggest war games the two allies have put on in five years.

The 11-day Freedom Shield exercise “will integrate elements of ‘live exercises’ with constructive simulations,” US Forces Korea (USFK) said in an earlier statement.

North Korea reiterated that it will take “the toughest counteraction against the most vicious plots of the US and its followers,” KCNA reported Monday.

Pyongyang has issued multiple warnings against the scheduled drill, noting that it is watching “every movement of the enemy and take corresponding and very powerful and overwhelming counteraction against its every move hostile to us,” Kim Yo Jong, the sister of North Korean leader Kim Jong Un, said last month.