BRUSSELS (Reuters) - European Union leaders gave themselves nearly a year on Thursday to agree a new long-term budget for the bloc, confirming that hopes of an accord before elections to the EU parliament in May are not realistic.May had long seemed an improbable target to resolve intense disputes, with Britain, one of the major contributors, due to leave in March, and other rich western members irritated by hostility to EU policies on human rights and immigration among some ex-communist..