BBC News, with Eileen Macqueen.The Yemeni government and Shiah Houthi rebels have signed an UN-brokered deal to try to end a political crisisthat had seen the rebels take over key parts of the capital Sanaa.Under the accord, a new government will be formed within a month.The Houthis and the Southern Movement Herak have three days to present their candidates for a prime minister.But the Houthis have not yet signed a part of the agreement that calls for a ceasefire to begin. Sebastian Usher reports.During the day the Houthis rebels took other ministries and military buildings raising fears of an all-out coup.It may have been more of a show of force when they have been threatening for some time.The security forces offered little or no resistance. The deal was waiting to be signed at the Presidential Palace.It wasn't clear if the Houthis advance would scupper the agreement or it's essentially a part of its choreography.The result for now at least is a big political change in Yemenwith the Shiah Houthis potentially gaining an unprecedented say in government at the expense of their main rival the Sunni Islamist movement al-Islah.Thousands of Russians have marched through the center of Moscow in their first major protest against Russia's alleged involvement in the Ukraine conflict.In Ukraine itself, the government had said its military forces will not pull back in the east of the country until Russian troops leave. Sierra Reins reports.As they march through central Moscow, the protestors chanted 'No to war and hands off Ukraine.'Many carried the yellow and blue Ukrainian national flag alongside the Russian colours in a show of solidarity.