Julian Assange is wanted by a number of people at the moment, but top of the list has to be the U.S. government for the Wikileaks data leaks. While Assange is not currently in the U.S., there will be a few smiles within government today as Assange has been arrested.At 9:30am BST this morning Mr Assange voluntarily turned himself in at a police station in London. The charges he faces are not to do with the information Wikileaks has been releasing, instead the European arrest warrant issued for Assange is relating to two counts of sexual assault against two Swedish women.AdChoices广告The voluntary nature of his arrest has been explained by Mark Stephens, Assange’s lawyer, as a bid to understand the allegations and clear his name. He also made it clear any attempt to extradite Assange would be blocked.A court appearance is expected today and a large bail set for his release. While the charges pertain to sexual assault, it’s unclear if this arrest will be used as an opportunity to take further action against him relating to the Wikileaks data leaks.Read more at Sky NewsMatthew’s OpinionI think there will be a lot of phone calls happening right now between government officials, and in particular those of the U.S. and U.K. governments. Clearly this will be seen as an opportunity to detain Mr Assange for Wikileaks related offenses. But what has to be ascertained is whether any offense has actually occurred they could charge him for.Even if no further charges can be brought today, lots of pressure will be put on the UK authorities to keep Assange in custody while decisions are taken on what to do. The last thing Assange and his lawyer will want is to face extradition orders, or have to fight additional charges rather than focusing on clearing his name relating to sexual assault accusations.