It follows reports that President Trump was outraged by comments made by Mulvaney during the Ukraine corruption saga.
The allegations of abuse of power over the Ukraine incident led to impeachment proceedings against President Trump.
Mulvaney's departure has been on the cards for the last few weeks.
Mr Mulvaney is to become US special envoy to Northern Ireland, while North Carolina lawmaker Mark Meadows has been appointed to take over his former position.
Pope Leo XIV appeals for "no more war" in first Sunday message
Pope Leo XIV appealed to the world's major powers for "no more war" in his first Sunday message to crowds in St. Peter's Square since his election as pontiff.
Putin proposes direct peace talks with Ukraine after three years of war
Russian President Vladimir Putin on Sunday proposed direct talks with Ukraine on May 15 in Turkey that he said should be aimed at bringing a durable peace, an initiative welcomed by US President Donald Trump.
Fragile ceasefire holds between India, Pakistan as Trump offers more help
A fragile ceasefire was holding between India and Pakistan on Sunday, after hours of overnight fighting between the two neighbours, as US President Donald Trump said he will work to provide a solution regarding Kashmir.
India and Pakistan agree to immediate ceasefire
US President Donald Trump said on Saturday that India and Pakistan had agreed to a "full and immediate ceasefire" after a fourth day of strikes and counter-strikes against each other's military installations.
G7 urges India-Pakistan dialogue
The Group of Seven (G7) major countries on Friday urged India and Pakistan to engage in direct dialogue as hostilities rise between the nuclear-armed neighbours, while the US government said it has offered assistance in starting "constructive talks".
11:00pm - 6:00am
Enjoy your favourite music back to back commercial free, tune in to the Music Mix everyday from 1 until 2 for the music you love and the news updates you need
6:00am - 10:00am
The Business Breakfast is the day’s must listen for the UAE’s business leaders, and those who aspire to be.
UAE President Sheikh Mohamed Bin Zayed Al Nahyan’s visit to the US to boost economic and technology ties including AI.
Apple Inc. shares fell Monday after a closely followed analyst warned that demand for the firm’s new iPhone 16 Pro model has been lower than expected. Is this a sign that the AI software just isn’t ready?
Does working from home kill productivity or can it benefit staff by giving them more flexibility and a better work/life balance?
Dubai’s current population is more than double compared to almost twenty years ago, which now stands at 3.7 million. Lots of families are also moving to the UAE now. So what does it mean for the property market?
Glory Ehirim Nkiruka is Noon’s first ever female delivery driver. In her first ever interview, she explained why she loves her job, despite the heat!
