Thousands of Kuwaitis rallied late Tuesday against a court ruling scrapping legislative polls as the opposition called for a constitutional monarchy and a full parliamentary system.

"This is the beginning of the road to a constitutional monarchy," prominent opposition MP Mussallam al-Barrak told a large gathering that lasted until around midnight Tuesday to protest the court ruling.

President Michel Suleiman traveled to Bahrain on Tuesday as part of his efforts to convince the leaderships of four Gulf countries to review their travel advisories to Lebanon.

He held talks with King Hamad bin Issa al-Khalifa on bilateral ties and the situation in the Middle East.

The Kuwaiti cabinet submitted its resignation to the oil-rich Gulf state's ruler on Monday, days after the top court nullified legislative elections, the private Al-Rai television channel reported.

"The Kuwaiti cabinet submitted its resignation to the emir," Al-Rai announced, without giving further details.

A Kuwaiti court began Monday the trial of 68 youth activists, including nine MPs, for storming the parliament building in November to demand the resignation of the former prime minister, a lawyer said.

The court accused the activists with various charges including storming parliament, resisting police, unauthorized gathering and urging policemen to disobey orders, Al-Humaidi Al-Subaie, one of the defense lawyers, told AFP.

The Kuwaiti opposition described a ruling by the top court scrapping legislative polls as "null and void" and politically motivated, urging a reversal of the decision to avoid "turmoil" in the country.

"From a legal viewpoint, the ruling is null and void ... and accordingly has no value," said a statement signed by 35 members of the dissolved parliament following a lengthy meeting that ended at midnight Sunday.

The Saudi Embassy in Lebanon denied on Friday that it asked its nationals that are currently present in the country to leave by the end of June.

"The report, which was published in a Lebanese newspaper, is completely false,” the embassy said in a statement.

Progressive Socialist Party leader MP Walid Jumblat stressed on Friday that he is still part of the cabinet “until further notice,” confirming his centrist stance.

He slammed some of the March 14-led opposition members for continuously calling on the cabinet to resign.

Kuwait's constitutional court on Wednesday declared February's legislative polls in which the opposition swept to victory illegal and reinstated the previous pro-government parliament, state media said.

Leading opposition MP Mussallam al-Barrak described the verdict as "a coup against the constitution" and called for the opposition to take a united stand.

Kuwait's Oil Minister Hani Hussein said on Wednesday that OPEC will "most likely" maintain its production at 30 million barrels per day, but admitted differences among member countries.

"There are different directions before the OPEC ministerial meeting," on Thursday, the official KUNA news agency quoted Hussein as saying in Vienna where the meeting will take place.

The United Arab Emirates has renewed its call on its citizens to avoid travel to Lebanon and Syria over the security situation in the two countries despite a visit by President Michel Suleiman to Abu Dhabi to review the decision.

In a statement released on Monday, the UAE foreign ministry advised citizens not to travel to Lebanon and Syria out of its keenness on the safety of the nationals abroad.