US President Barrack Obama said on Sunday he would veto the anti-Iran sanctions bill if Congress passes such a legislation. "Imposing additional sanctions now will only risk derailing our efforts to resolve this issue peacefully, and I will veto any legislation enacting new sanctions during the negotiation," Obama said. President Barack Obama also said the United States and other nations would begin to give Iran relief on economic sanctions as long as Iran lives up to its end of an agreement reached on Sunday to start implementing a nuclear deal. On November 24, Iran and the Group 5+1 (the US, Russia, China, Britain and France plus Germany) sealed a six-month Joint Plan of Action in Geneva to lay the groundwork for the full resolution of the West’s decade-old dispute with Iran over its nuclear energy program. In exchange for Tehran’s confidence-building bid to limit certain aspects of its nuclear activities, the Sextet of world powers agreed to lift some of the existing sanctions against Tehran and continue talks with the country to settle all problems between the two sides. Iran and the six world powers agreed on Sunday to start implementing the Geneva interim nuclear deal on January 20, senior Iranian negotiators announced, adding that the two sides have agreed to fulfill their undertakings simultaneously and on a single day.