The motorcade of Jordan's king came under a rare stoning attack in the south on Monday, a security official said in comments denied by both the palace and government a day after the monarch vowed to enhance reforms.

"(The rear) part of King Abdullah II's motorcade was attacked with stones and empty bottles by a group of men in their 20s and 30s after the king's car entered (the southern city) Tafileh," the official said of Monday's royal visit.

A U.S. man based in Scotland has unmasked himself as the author of the "Gay Girl in Damascus" blog, sparking fears Monday that his hoax could harm real-life opponents of the Syrian regime's crackdown.

Tom MacMaster, a bearded 40-year-old married Edinburgh University masters student, apologized on Sunday and confessed that he was "Amina Abdallah Arraf", supposedly a Syrian lesbian.

Kuwait's deputy premier, Sheikh Ahmed Fahad al-Sabah, a senior member of the ruling family, has submitted his resignation from the cabinet, a minister said on Monday.

"Sheikh Ahmed has submitted his resignation and the cabinet referred it to the ruler," state minister for cabinet affairs and government spokesman Ali al-Rashed told reporters.

Israeli police arrested four Israeli settlers in the West Bank settlement of Yitzhar on Monday, accusing them of "attacks on public order," a police spokeswoman said.

Among those detained was a minor suspected of setting fire to Palestinian property, she said, adding that police had seized various items including computers when they arrested the suspects.

Israel's military police on Monday opened an inquiry into the theft of airplane parts, a spokeswoman said without confirming press reports that eight fighter-jet engines had been stolen.

"The military police have opened an inquiry into the matter," she told Agence France Presse without giving further detail or confirming reports of the theft from Tel Nof airbase near Tel Aviv.

King Abdullah II on Sunday vowed reforms leading to parliamentary government and a tougher fight against anti-corruption, warning against "chaos" and the media creating a climate of "hatred."

In his first televised address since pro-reform protests began in January, the king pledged a new electoral law that would result in "a parliament with active political party representation... that allows the formation of governments based on parliamentary majority... in the future."

The Syrian army's operations in the north of country makes a U.N. Security Council resolution all the more pressing, Germany said on Sunday.

"The dangerous situation makes a clear reaction from the U.N. Security Council all the more urgent," German Foreign Minister Guido Westerwelle, whose country currently holds a non-permanent seat on the council, said in a statement.

Egyptian authorities have arrested an alleged Israeli officer working for the Mossad intelligence agency on charges of spying, the official MENA news agency reported on Sunday.

The Supreme State Security prosecutor ordered the man's detention for 15 days pending investigations into alleged "spying on Egypt with the aim of damaging its economic and political interests," MENA said.

Yemeni colonel, two soldiers and four suspected al-Qaida militants were killed in clashes in the flashpoint southern city of Zinjibar on Sunday, a military official and medics said.

"I lost one of my men, Colonel Salem al-Zuba," who was killed in fierce clashes with al-Qaida gunmen, an officer of the besieged 25th mechanized brigade told Agence France Presse.

Under the rattle of heavy gunfire and loud explosions, Syrian army troops and tanks moved into a restive northwestern city from two sides Sunday, extending the crackdown on a region that is historically hostile the Damascus regime.

The Local Coordination Committee, which documents Syrian anti-government protests, said Jisr al-Shughour was attacked from the southern and eastern sides by troops in about 200 vehicles, including tanks. It said blasts were heard as helicopters clattered overhead.