The United States on Thursday targeted North Korea with fresh sanctions after its launch of a spy satellite last week, designating foreign-based agents it accused of facilitating sanctions evasion to gather revenue and technology for its weapons of mass destruction program.
The US Treasury Department in a statement said it also applied sanctions to cyber espionage group Kimsuky, accusing it of gathering intelligence to support North Korea's strategic and nuclear ambitions.
Thursday's action, taken in coordination with Australia, Japan and Korea, comes after North Korea last week successfully launched its first reconnaissance satellite, which it has said was designed to monitor US and South Korean military movements.
"Today's actions by the United States, Australia, Japan, and the Republic of Korea reflect our collective commitment to contesting Pyongyang's illicit and destabilizing activities," Treasury's Under Secretary for Terrorism and Financial Intelligence, Brian Nelson, said in the statement.
"We will remain focused on targeting these key nodes in the DPRK's illicit revenue generation and weapons proliferation," Nelson added, calling North Korea by the initials of its official name, the Democratic People's Republic of Korea.
South Korea's foreign ministry said on Friday that it had blacklisted 11 North Koreans for involvement in the country's satellite and ballistic missile development, banning them from any financial transactions.
The list includes senior officials from the National Aerospace Technology Administration, which oversaw the satellite launch, and the munitions industry department.
Since the launch of the satellite, North Korea said that its leader, Kim Jong Un, has reviewed spy satellite photos of the White House, Pentagon and US aircraft carriers at the naval base of Norfolk. Its state media has also reported that the satellite photographed cities and military bases in South Korea, Guam, and Italy, in addition to Washington.
Kim has called for his military to be ready to respond to any "provocation" by the enemy, state media said on Friday, after Pyongyang vowed to deploy stronger armed forces and new weapons along its border with the South.
Visiting North Korea's air force command on Thursday to the branch's airmen day, Kim rolled out guidelines to improve the military's combat posture and increase "its capabilities to fight a war to the full," news agency KCNA reported.
"He set forth operational and tactical policies ... so as to counter any military provocation and threat of the enemy immediately and powerfully," KCNA said.
That stop was followed by a visit to a fighter wing, where pilots staged a demonstration flight, it said.
Photographs released by state media showed Kim and his daughter, both dressed in long leather jackets, watching the show.
Kim praised the air force for being "fully prepared to perfectly carry out their air combat missions under any unfavorable situation," KCNA said.