Russian President Vladimir Putin said using Russian assets to help fund Ukraine's needs would amount to "robbery".The European Union plan has unravelled over differences with Belgium, which holds the bulk of the assets, but EU leaders agreed on Friday to provide a massive interest-free loan to Ukraine to meet its military and economic needs for the next two years.Mr Putin said on Friday that the move to use frozen Russian assets would have spooked investors, “dealing not only an image blow but undermining confidence in the eurozone.”