India and Russia signed the long-pending nuclear cooperation agreement for construction of four additional nuclear reactors at Kudankulam and reactors in other new sites in India. The cooperation agreement, signed by Russian state corporation, Rosatom, director-general Sergei Kiriyenko and department of atomic energy chief Anil Kakodkar, will govern bilateral civilian nuclear cooperation including construction of Russian- designed power plants in India. Sources said that Russia, which is helping India build two light water reactors of 1,000 MW each at Kudankulam, wants the Centre to allot another site for Russia and wants the decision on the site taken before Lok Sabha elections. After the US and France, this is the third agreement that India has signed in the area of civilian nuclear cooperation. But the civilian nuclear cooperation agreement signaled a new phase of energy cooperation between the two countries.