Iraq's foreign minister on Wednesday said security talks between Iran and the United states have been indefinitely postponed due to «exchange of accusations» between the sides, the Associated Press reported. «It is impossible to hold a new round (of talks) because of exchange of accusations between the two sides,» Hoshyar Zebari told a news conference in Baghdad. «The negotiations are postponed indefinitely because of tense atmosphere.» Zebari said «resuming dialogue» between Iraq, Iran and the United States was crucial. «We had three important rounds but they yielded no fast results,» said Zebari, adding that Iraq's efforts to hold the next round of talks have failed.