Annexation of Crimea by the Russian Federation fail, and greatly damaging the maize and soybean crops. Annexation of Crimea by the Russian Federation The Crimean peninsula was annexed from Ukraine by the Russian Federation in February–March 2014 and since then has been administered as two Russian federal subjects—the Republic of Crimea and the federal city of Sevastopol. The annexation was accompanied by a military intervention by Russia in Crimea that took place in the aftermath of the 2014 Ukrainian revolution and was part of wider unrest across southern and eastern Ukraine. On 22–23 February 2014, Russian President Vladimir Putin convened an all-night meeting with security service chiefs
Crimea withdrew its forces from southern Kherson in December 2014 Since Russian control over Crimea was established in 2014, the peninsula has been administered as part of the Russian Federation except for the northern areas of the Arabat Spit and the Syvash which are still controlled by Ukraine. Within days of the signing of the accession treaty, the process of integrating Crimea into the Russian federation began: in March the Russian ruble went into official circulation and clocks were moved forward to Moscow time, in April a new revision of the Russian Constitution was officially released with the Republic of Crimea