The 'Snow White And The Huntsman' actress has filed papers at the Los Angeles County Superior Court, asking for spousal support and joint custody of their children Sykla, seven, and Tennyson, five.
Rupert has filed his response to the petition in which he also asks for joint custody and he has requested that he and Liberty split the court costs between them.
Liberty and Rupert's marriage has been under strain ever since his fling with 'Twilight Saga' actress Kristen Stewart was exposed last year.
Although Liberty initially kicked the director out of their home after his infidelity was revealed, they began couples therapy in an attempt to save their marriage.
A source said at the time: "It was Rupert's suggestion that he go to therapy with Liberty. He will do anything to save his marriage because he loves his wife and knows he screwed up.
"They have been married since 2003, and have two children together, they have a life together. Rupert is willing to do absolutely anything and everything he can to save his marriage, he knows this is the worst mistake of his life, and he cannot believe he was so stupid.
"The thought of losing his wife and children, who he loves more than anything in the world, is killing him."
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The Department of Education has been criticised by Children's Ombudsman Emily Logan over enrolment appeals and home tuition after a teenager missed nearly two years of full-time education when up to 30 schools refused him a place.
A man who appeared to provide sign language interpretation on stage for Nelson Mandela's memorial service, attended by scores of heads of state, was a "fake", the national director of the Deaf Federation of South Africa said.
The troika is leaving Ireland with business unfinished, including changes to the medical and legal service, but they will be pursued through the new EU governance to which all eurozone countries are now subject.
The ECB could be forced to introduce another long- term refinancing operation and drag the deposit rate into a negative territory to cushion the region from another year of sluggish growth and the uncertainty caused by the comprehensive assessment of the banks, according to the Bank of America Merrill Lynch 2014 economic outlook.
IT'S one of the most iconic features on the Cork skyline. First established as a monastic site in 606 AD, St Fin Barre's Cathedral now houses a French neo-gothic cathedral designed in 1862 by William Burges of London.
Tipperary native Brian Lonergan fulfilled a long-standing ambition when his tricolour appeared on live TV during Sunday's NFL clash between the San Francisco 49ers and the Seattle Seahawks at Candlestick Park.
THE scandal at the Central Remedial Clinic is a gift to the Government. Here we have an organisation seemingly plundering charitable funds, to feather the nests of a group of Fianna Fáil insiders, all of whom can be linked easily to former Taoiseach Bertie Ahern.