* Brotherhood challenges principle of dynastic rule
* Jihadis fighting Assad, and Shi'ite groups, also listed
* Saudis who go to war abroad could be jailed (Adds details, quote, Egyptian reaction)
RIYADH, March 7 (Reuters) - Saudi Arabia has formally designated the Muslim Brotherhood as a terrorist organisation, in a move that could increase pressure on Qatar whose backing for the group has sparked a row with fellow Gulf monarchies.
The U.S.-allied kingdom has also designated as terrorist the Nusra Front and the Islamic State in Iraq and the Levant, whose fighters are battling Syrian President Bashar al-Assad, the Interior Ministry said in a statement published by state media.
Friday's move appeared to enforce a royal decree last month in which Riyadh, which backs some rebel groups in Syria with money and arms, said it would jail for between three and 20 years any citizen found guilty of fighting in conflicts abroad.
It underscored concern about young Saudis hardened by battle against Assad coming home to target the ruling Al Saud royal family - as has happened after the wars in Afghanistan and Iraq.
Saudi Arabia's Islamic religious authorities have spoken out against Saudi fighters going to Syria, but the Interior Ministry estimates that around 1,200 Saudis have gone nonetheless.
Last month's decree said a committee would be set up to determine the groups to be outlawed. The ministry's statement on Friday said the groups mentioned were those the committee had agreed on and that had been approved by the authorities.
Riyadh fears the Brotherhood, whose Sunni Islamist doctrines challenge the Saudi principle of dynastic rule, has tried to build support inside the kingdom since the Arab Spring revolutions.
In an unprecedented move, Saudi Arabia, the United Arab Emirates (UAE) and Bahrain recalled their ambassadors from Qatar on Wednesday, saying Doha had failed to abide by an accord not to interfere in each others' internal affairs.
Saudi Arabia and the UAE are fuming over Qatar's support for the Muslim Brotherhood, and resent the way Doha has sheltered influential cleric Yusuf Qaradawi, a critic of the Saudi authorities, and given him regular airtime on its pan-Arab satellite channel Al Jazeera.
The Interior Ministry said on Friday the royal decree would apply to both Saudis and foreign residents who joined, endorsed or gave moral or material aid to groups it classifies as terrorist or extremist, whether inside or outside the country.
The statement also said "those who insult other countries and their leaders" or "attended conferences or gatherings inside and outside (the country) that aim to target the security and stability and spread sedition in the society", would be punished by law.
In Egypt, the Brotherhood, which won every election following the toppling of veteran leader Hosni Mubarak in 2011, has been driven underground since the army deposed President Mohamed Mursi, a member of the group that also endured repression in the Mubarak era.
The army-backed government in Cairo designated the Brotherhood as a terrorist group in December after accusing it of carrying out a suicide bomb attack on a police station that killed 16 people. The Brotherhood condemned that attack and denies using violence.
On Friday, Egyptian Foreign Ministry spokesman Badr Abdelatty said Cairo approved of Riyadh's move to declare the Brotherhood a terrorist organization.
"We hail it, we welcome it," he said. "It is in the right direction."
The Saudi Interior Ministry also listed as terrorist Yemen's Shi'ite Houthi movement and Hezbollah, a radical Shi'ite group in Saudi Arabia's eastern province which authorities say is linked to Iran and Lebanese Hezbollah. (Reporting by Rania El Gamal in Dubai; additional reporting by Maggie Fick and Omar Fahmy in Cairo; editing by Andrew Roche)
Our 2024 Coverage Needs You
It's Another Trump-Biden Showdown — And We Need Your Help
The Future Of Democracy Is At Stake
Our 2024 Coverage Needs You
Your Loyalty Means The World To Us
As Americans head to the polls in 2024, the very future of our country is at stake. At HuffPost, we believe that a free press is critical to creating well-informed voters. That's why our journalism is free for everyone, even though other newsrooms retreat behind expensive paywalls.
Our journalists will continue to cover the twists and turns during this historic presidential election. With your help, we'll bring you hard-hitting investigations, well-researched analysis and timely takes you can't find elsewhere. Reporting in this current political climate is a responsibility we do not take lightly, and we thank you for your support.
Contribute as little as $2 to keep our news free for all.
Can't afford to donate? Support HuffPost by creating a free account and log in while you read.
The 2024 election is heating up, and women's rights, health care, voting rights, and the very future of democracy are all at stake. Donald Trump will face Joe Biden in the most consequential vote of our time. And HuffPost will be there, covering every twist and turn. America's future hangs in the balance. Would you consider contributing to support our journalism and keep it free for all during this critical season?
HuffPost believes news should be accessible to everyone, regardless of their ability to pay for it. We rely on readers like you to help fund our work. Any contribution you can make — even as little as $2 — goes directly toward supporting the impactful journalism that we will continue to produce this year. Thank you for being part of our story.
Can't afford to donate? Support HuffPost by creating a free account and log in while you read.
It's official: Donald Trump will face Joe Biden this fall in the presidential election. As we face the most consequential presidential election of our time, HuffPost is committed to bringing you up-to-date, accurate news about the 2024 race. While other outlets have retreated behind paywalls, you can trust our news will stay free.
But we can't do it without your help. Reader funding is one of the key ways we support our newsroom. Would you consider making a donation to help fund our news during this critical time? Your contributions are vital to supporting a free press.
Contribute as little as $2 to keep our journalism free and accessible to all.
Can't afford to donate? Support HuffPost by creating a free account and log in while you read.
As Americans head to the polls in 2024, the very future of our country is at stake. At HuffPost, we believe that a free press is critical to creating well-informed voters. That's why our journalism is free for everyone, even though other newsrooms retreat behind expensive paywalls.
Our journalists will continue to cover the twists and turns during this historic presidential election. With your help, we'll bring you hard-hitting investigations, well-researched analysis and timely takes you can't find elsewhere. Reporting in this current political climate is a responsibility we do not take lightly, and we thank you for your support.
Contribute as little as $2 to keep our news free for all.
Can't afford to donate? Support HuffPost by creating a free account and log in while you read.
Dear HuffPost Reader
Thank you for your past contribution to HuffPost. We are sincerely grateful for readers like you who help us ensure that we can keep our journalism free for everyone.
The stakes are high this year, and our 2024 coverage could use continued support. Would you consider becoming a regular HuffPost contributor?
Dear HuffPost Reader
Thank you for your past contribution to HuffPost. We are sincerely grateful for readers like you who help us ensure that we can keep our journalism free for everyone.
The stakes are high this year, and our 2024 coverage could use continued support. If circumstances have changed since you last contributed, we hope you'll consider contributing to HuffPost once more.
Support HuffPostAlready contributed? Log in to hide these messages.