Kuwait's top court ordered the dissolution of parliament on Sunday and called for fresh elections, a ruling likely to herald fresh political volatility in the U.S.-allied Gulf Arab state. The Constitutional Court made its ruling after throwing out opposition challenges to changes to the electoral system decreed by the emir, hereditary ruler of the oil-exporting country, head judge Youssef al-Mutawa told reporters. Political stability in Kuwait, owner of more than six percent of global oil reserves, has traditionally depended on cooperation between the government and parliament, the oldest and most powerful legislature in the Gulf Arab states. The development is a blow to opposition politicians who boycotted a parliamentary election in December in protest at the electoral rules. The election was the fifth since 2006 and political upheaval has held up economic development and reforms. "This verdict today is the worst decision," former opposition MP Waleed Tabtabie w