Russia has warned Iran that it is wasting chance to start a broad dialogue. Foreign Minister Sergei Lavrov said in Moscow that Iran's defiance over its nuclear programme means the country is wasting a chance for talks to find a solution. Sergei Lavrov reiterated that sanctions against Iran could be inevitable. <br/><br/>Meanwhile, The United States says that it stands by its offer of comprehensive diplomatic dialogue over Iran's nuclear programme despite Tehran's isolation moves. Meanwhile, President Barrack Obama has said the United States wants Iran to take its rightful place in the comity of nations coming up with its real responsibilities.