Strategic reconnaissance aircraft the United States air force Boeing RC-135V conducted exploration off the coast of the Crimea, said monitoring resource PlaneRadar on Twitter. according to the information portal, the electronic reconnaissance aircraft began flights from Greece around 7. 50 am Moscow time, and after a couple of hours began to study the Black sea coast. In the hour of the day, the Boeing RC-135V left to the airport host. later, the same aircraft carried out a reconnaissance flight at the borders of the Kaliningrad region and Belarus, said the portal. in November, the Russian military intercepted an American reconnaissance plane over the Black sea. In the U.S. the manoeuvre of the Russian su-27 called unsafe, but the Ministry of defence this statement is contested. According to authorities, over neutral waters of the Black sea was discovered an unknown target, which is then identified and escorted, preventing violations of the airspace. over the past period, the activity of foreign reconnaissance aircraft and unmanned aerial vehicles close to the Russian borders has increased. For example, they were noticed as in the area of the Crimea and the Krasnodar territory, and near the Western borders of the country. in the Ministry of defence many times, campaigned with Washington to abandon such operations, however, the Pentagon is refused. <span style="color:darkgray