between Tatarstan and the Aksyonov government in Crimea that implied collaboration between ten government institutions as well as significant financial aid to Crimea from Tatarstan businesses. On 11 March, Minnikhanov was in Crimea on his second visit and attended as a guest in the Crimean parliament chamber during the vote on the declaration of sovereignty pending 16 March referendum. The Tatarstan's Mufti Kamil Samigullin invited Crimean Tatars to study in madrasas in Kazan, and declared support for their "brothers in faith and blood". Mustafa Dzhemilev, a former leader of the Crimean Tatar Majlis, believed that forces that were suspected to be Russian forces should leave the Crimean peninsula, and asked the UN Security Council to send peacekeepers into the region. On 15 March, thousands of protesters (estimates varying from 3,000 by official sources up to 50,000 claimed by the opposition) in Moscow marched against Russian involvement in Ukraine, many waving Ukrainian flags. At the same time, a pro-government (and pro-referendum) rally occurred across the street, counting in the thousands as well (officials claiming 27,000 with the opposition claiming about 10,000). In February 2015, the leading independent Russian newspaper Novaya Gazeta obtained documents, allegedly written by oligarch Konstantin Malofeev and others, which provided the Russian government with a strategy in the event of Viktor Yanukovych's removal from power and the break-up of Ukraine, which were considered likely. The documents outline plans for annexation of Crimea and the eastern portions of the country, closely describing the events that actually followed after Yanukovych's fall. The documents also describe plans for a public relations campaign that would seek to justify Russian actions. In June 2015 Mikhail Kasyanov stated that all Russian Duma decisions on Crimea annexation were illegal from the international point of view and the annexation was provoked by false accusations of discrimination of Russian nationals in Ukraine. As of January 2019, Arkady Rotenberg through his Stroygazmontazh LLC and his companies building the Crimean Bridge along with Nikolai Shamalov and Yuri Kovalchuk through their Rossiya Bank have become the most important investors in Russia's development of the annexed Crimea. International response There have been a range of international reactions to the annexation. In March 2014, the UN General Assembly passed a non-binding resolution 100 in favour, 11 against and 58 abstentions in the 193-nation assembly that declared Crimea's Moscow-backed referendum invalid. In a move supported by the Lithuanian President, the United States government