Sarah Huckabee Sanders, the youngest governor in the US, has delivered the Republican response to President Joe Biden's State of the Union address.

Mrs Sanders, 40, took the oath of office four weeks ago as the 47th - and first female - governor of the southern state of Arkansas.

But she is best known for her tenure as press secretary to former President Donald Trump from 2017 to 2019.

In her 10-minute formal rebuttal, she repeatedly criticised Mr Biden.

She highlighted his age - at 80 years old he is the oldest president in US history - and accused his administration of failing Americans since taking power two years ago.

"I heard tonight from President Biden," she said in the pre-recorded video address which was played shortly after Mr Biden spoke. "From out-of-control inflation and violent crime to the dangerous border crisis and threat from China, Biden and the Democrats have failed you."

She also took aim at "woke fantasies" and "a left-wing culture war".