The US National Security Adviser has accused North Korea of violating a UN Security Council resolution.
In a press roundtable, John Bolton said the country's recent missile launches were illegal.
He also called on North Korea's leader Kim Jong Un to restart denuclearization talks with countries like Japan, South Korea and the US.
“Trump has held the door open for Kim, the next step is for Kim to walk through it,” said Bolton.

Winter storm kills dozens as cold lingers in central and eastern US
Death toll rises to 24 as rescuers search for missing people in Indonesia landslide
Three tourists killed in boat capsize off Oman coast
School materials enter Gaza after being blocked for two years, UN agency says
Rescue efforts under way after Philippine ferry sinks, leaving 18 dead