Joe Biden, the president of the United States, issued a warning that "US or its allies...will result in the end of whatever regime, were it to take such...action" in the event of a North Korean nuclear attack. 
During a joint conference with South Korean President Yoon Suk Yeol, president Joe Biden made these remarks. 
A new weapons deal to counter North Korea's nuclear threat was announced on Wednesday by South Korea and the United States.