UN Secretary-General Antonio Guterres on Tuesday condemned North Korea’s firing of a ballistic missile over Japan, the latest in a record year of sanctions-busting weapons tests by Pyongyang. “This is clearly an escalation,” said Guterres spokesman Stephane Dujarric in a statement. The United Nations chief called on North Korean authorities to resume dialogue with key parties to work towards the “complete and verifiable denuclearization of the Korean peninsula.”