The firings carried out by North Korea on February 26 and March 4 were aimed at testing “
elements of a new system
” of intercontinental ballistic missiles, a senior White House official said Thursday, March 10, describing these tests as “
serious escalation
.
Read alsoSouth Korea's warning shots against a North Korean patrol boat
In response, the United States will announce measures on Friday to "
prevent North Korea from having access to foreign products and technologies allowing it to develop its prohibited weapons programs
", and "
other actions will follow in the next few days
," said the source, who requested anonymity.