Iran's decision to ramp up uranium enrichment "heightens doubts on the sincerity" of the Islamic republic's nuclear intentions, the Russian foreign ministry said Tuesday.
"Iran's decision to start its own enrichment of uranium...heightens doubts on the sincerity of Iran's intentions to end the international community's existing concerns" over its nuclear program, a ministry statement said.
Iran declared Tuesday it has started the process of producing 20% enriched uranium, defying world powers who suspect its atomic drive hides a covert effort to develop a nuclear bomb. Iran denies the charge.