Saudi Arabia's terrified Crown Prince forced into hiding as Houthi rebels hit Riyadh with deadly missile strikes Saudi Arabia's Crown Prince Mohammed bin Salman has been forced into hiding as Houthi rebels continue to launch deadly missile strikes on Riyadh. The recent attacks, including one on King Khalid International Airport that killed 13, have prompted the Prince to move between secure bunkers. Donald Trump has warned of potential US intervention, while international allies like the UK and EU condemn the escalation and offer support to Saudi Arabia. Saudi Arabia's terrified Crown Prince has been forced into hiding as Houthi rebels continue to hit Riyadh with deadly missile strikes, a report has claimed. Mohammed bin Salman, 41, has for the past six days been moving between heavily guarded palaces with bunkers, according to officials. On Saturday, the Kingdom was struck by its deadliest attack in a decade when a projectile hit King Khalid International Airport, killing 13 and injuring hundreds. The Saudi capital's airport was struck again yesterday, leaving one dead and 11 injured.Trump Warns Of US InterventionAfter this serious escalation in the war between the Saudi-led coalition government and Iran-backed Houthi fighters, Donald Trump warned the US could intervene. Yesterday he waded in on the conflict, telling reporters he 'may' join a counter attack after the Saudis vowed to retaliate. As the Houthi strikes on Riyadh intensify the terrified crown prince has been closely guarded out of sight, the Wall Street Journal reports.The last time he was seen in public was on Tuesday, when he gave blood in a bid to support a national donation drive. Saudi Crown Prince Mohammed bin Salman, 41, meeting Donald Trump last year... he has been forced into hiding and is reportedly moving between heavily guarded palaces with bunkers Surveillance footage shows the moment the passenger terminal at King Khalid International Airport in Riyadh was attacked on Saturday Houthi rebels claimed responsibility for the weekend attacks, which killed a total of 14 and left more than 300 injured According to Saudi officials: 'The 41-year-old crown prince is shuttling between heavily guarded palaces equipped with bunkers and is guarded by a handpicked security team.' Schools across Riyadh have been forced to close and are operating with remote learning as Houthi attacks intensify. It comes after President Trump last month described the Crown Prince as a 'good friend'. When asked by reporters about the momentum that Houthi fighters were gaining in Yemen, he said: 'Everything is gonna work out fine and dandy. It's gonna be very good.UK And EU Condemn Attacks' And yesterday, when quizzed about US involvement in the conflict, the President said he is 'going to look at it'. The Houthi strikes on Saudi Arabia on Sunday drew widespread criticism as the UK and EU condemned the attacks and reaffirmed their support for the country. UK Defence Secretary Wes Streeting said the Houthis' missile strikes were 'contemptible' and described them as 'dangerous escalation' in the war.The UK has warned against travel to Saudi Arabia - advising British nationals to 'continue to avoid King Khalid International Airport in Riyadh until the airport is secure' The attack on King Khalid International Airport in Riyadh on Saturday left 13 dead A thick black column of smoke and flames could be seen rising from airport buildings An urgent evacuation was triggered, with all flights to Riyadh either diverted or cancelled He told Sky News: 'What we've seen overnight is a dangerous escalation and I'm afraid an increasing pattern of behaviour from the Houthis that's targeting civilian sites in Saudi Arabia.'This is completely contemptible action and it's one of the reasons why the UK is providing support to Saudi Arabia in the form of air defences, but also air-to-air refuelling. 'We want to see an end to this conflict. It cannot be right that the Houthis are attacking civilian targets in this way.' Meanwhile EU chief Ursula von der Leyen joined the chorus of condemnation as she too labelled the attacks a 'dangerous escalation' while calling on the Houthis to halt strikes on civilian targets. She said: 'These attacks by Iran's proxies are pushing the region into a spiral of violence.'They are destabilising crucial global transport and energy nodes with shockwaves sent through the world. These murderous attacks at civilians must stop at once.Houthis Claim Responsibility For Strikes' She added that the EU stands in 'solidarity with Saudi Arabia'. The Houthis last night claimed responsibility for the attacks on King Khalid International Airport yesterday, which killed one person and injured 11 others. The group said it had targeted the location several times as well as Saudi energy facilities, a day after Saturday's deadly attack.Military spokesman Yahya Saree said the Iran-backed group 'carried out four qualitative operations in the past 24 hours using ballistic and cruise missiles and drones'. Saudi Arabia's civil aviation authority condemned the 'heinous attack' - saying it resulted in 'material damage'. The authority said: 'The attack resulted in the death of a Pakistani resident - may God have mercy on him - and the injury of 11 others'