New Delhi, Jan 3 (ANI): As Prime Minister Manmohan Singh addressed a press conference at the National Media Centre in central Delhi on Friday, politicos reacted on the same. CPI leader Sitaram Yechury and JD (U) leader Sharad Yadav said that most corruption scams have emerged in UPA regime. They further said that during his regime country has not moved ahead, instead has moved one step backwards.