BUENOS AIRES (Reuters) - Spain's Repsol has canceled its contract to supply Argentina with liquefied natural gas (LNG), just weeks after the country seized control of the energy company's majority stake in YPF , a document obtained by Reuters on Friday showed. Argentina relies on LNG imports to meet between 20 percent and 30 percent of domestic natural gas consumption. Repsol was to supply 10 cargoes to Argentina this year out of 80 from all suppliers to help meet peak demand from June to September. ...

LONDON (Reuters) - International drugmakers are working with European authorities on emergency plans to keep medicines flowing into Greece if the country crashes out of the euro. Discussions have intensified in recent days, according to industry sources, and manufacturers are looking closely at the experience of Argentina's collapse in 2002, when some firms agreed to continue to supply medicines without payment for a period of time. ...

BUENOS AIRES (Reuters) - Argentina's quest to keep dollars in the country is spawning illegal money trades inside offices and even schools. But big companies have fewer ways to skirt currency controls and must adapt to the country's offbeat, changeable rules. President Cristina Fernandez, a feisty populist, vowed to "fine-tune" economic policy after winning re-election in October. She has since limited imports, imposed capital controls and seized a majority stake in top energy company YPF. ...

Roger Federer braved dust storm conditions to blow past Argentine Carlos Berlocq 6-3, 6-4 and open his week with a second-round victory at the Rome Masters on Wednesday.