From its founding until 1967, Comecon had operated only on the basis of unanimous agreements. It had become increasingly obvious that the result was usually failure. In 1967, Comecon adopted the "interested party principle", under which any country could opt out of any project they chose, still allowing the other member states to use Comecon mechanisms to coordinate their activities. In principle, a country could still veto, but the hope was that they would typically choose just to step aside rather than either veto or be a reluctant participant. This aimed, at least in part, at allowing Romania to chart its own economic course without leaving Comecon entirely or bringing it to an impasse (see Soviet–Romanian split).