The newly appointed interim national security adviser is preparing to stay in that role for up to six months, a person close to him said.

Trump's appointment of Secretary of State Marco Rubio to temporarily replace Mike Waltz as national security advisor is the first major leadership shake-up of his second administration.

India's foreign minister said he has told Secretary of State Marco Rubio that perpetrators of the deadly attack in Kashmir last week should be brought to justice, as the U.S. sought to calm tensions between nuclear-armed India and Pakistan.

U.S. Secretary of State Marco Rubio called senior officials in India and Pakistan in an effort to defuse the crisis that followed last week's deadly attack in Kashmir, the State Department said

Secretary of State Marco Rubio called senior officials from India and Pakistan, looking to mediate between the two following a terrorist attack in Kashmir that India blamed on its northwestern neighbor.