What’s a central theme of the conference held in London? [br] [originaltext]

In London, a conference of finance and employment ministers from the group of seven industrial democracies joined by Russia has produced a set of principles for dealing with unemployment, (29)a central theme of which is the concept of government taking the lead in helping workers gain the skills that employers need.(30)The conference also called for reforms to labor laws and welfare systems, to encourage businesses to offer more jobs and workers to accept them.