Associated Press<a href='https://ads.independent.com.mt/www/delivery/ck.php?n=afef72b0&cb=296' target='_blank'><img data-src='https://ads.independent.com.mt/www/delivery/avw.php?zoneid=22&cb=296&n=afef72b0' border='0' alt='' /></a>Estonia summoned a Russian diplomat to protest after three Russian fighter aircraft entered its airspace without permission Friday and stayed there for 12 minutes, the Foreign Ministry said. Foreign Minister Margus Tsahkna said Russia violated Estonian airspace four times this year "but today's incursion, involving three fighter aircraft entering our airspace, is unprecedentedly brazen." Italian F-35 fighter jets respond to Russian incursionThe Russian MIG-31 fighters entered Estonian airspace in the area of Vaindloo Island, a small island located in the Gulf of Finland in the Baltic Sea, the Estonian military said in a separate statement. Italian Air Force F-35 fighter jets, currently deployed as part of the NATO Baltic Air Policing Mission, responded to the incident, according to the statement. Dozens of NATO jets are on round-the-clock alert across Europe to respond to incidents such as unannounced military flights or civilian planes losing communication with air traffic controllers.