“Arktika 2007” – a research and geopolitical expedition conducted by Russian and foreign explorers in the Arctic zone of the Russian Federation. There were two stages in this expedition. The first was performed in the period from May to June 2007 on a nuclear icebreaker “Rossiya” and aimed at geological and geophysical studies in the zone where the Lomonosov mid-ocean ridge joins the Laptev Sea and the East Siberian Sea shelves. The expedition was meant to justify the external border of the Russian Federation continental shelf. In concordance with the UN Convention on the Law of the Sea of 1982 ratified by Russia in 1997 its participants may claim an expansion of 200 miles of exclusive water area economic zone and a spread of its sovereign rights for the continental shelf within 10 years after its ratification. This stands if it is proven that the subaqueous shelf part is the continuation of the mainland, the continental massif of the littoral state.