A short term as US National Security Advisor for Mike Waltz, who's been removed from the role by Donald Trump. 

Current Secretary of State Marco Rubio will take over the job in the interim, as Waltz has been nominated for Ambassador to the UN. 

This comes after he says he inadvertently added a journalist to a Signal group chat, where officials planned military strikes in Yemen. 

US Correspondent Dan Mitchinson told Heather du Plessis-Allan that no one really believes this is a promotion for Waltz. 

He believes Trump wanted to avoid the criticism that would come if he fired him altogether, and this has been coming for some time. 

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