Welcome to our coverage of world events.

US President Donald Trump has overhauled his inner circle, replacing chief of staff Susie Wiles with hardline adviser Stephen Miller, just days after Republicans suffered a crushing defeat in the midterm elections.

'End of the Trump era': Tucker Carlson buries Trump

Meanwhile, following this week’s Democrat surge in Texas, the mayor of Houston announced the city’s police department will limit its cooperation with federal immigration agents.

The United States is also offering a $20 million ($A29.1 million) reward “and possible relocation” for information about Iran’s nuclear program, the military said Friday, despite President Donald Trump’s repeated claims that it has been obliterated.

Read on for more updates.