Poland has summoned Russia's ambassador over an incident involving a Russian fighter jet and Polish border guard aircraft over the Black Sea on May 5, the Polish Foreign Ministry said. The near-miss incident put NATO's air-policing units in a higher state of readiness and worsened already hostile relations between Russia and Poland, which has been a strong supporter of Ukraine as it battles a Russian invasion. The incident occurred when a Polish border guard aircraft, on patrol for the EU's border agency Frontex, narrowly avoided a collision with a Russian fighter jet over the Black Sea, Romania and Poland say. To read the original story by Reuters, click here.