The UK is to deploy a medium-range missile system and 100 personnel to Poland to protect the country’s airspace from Russian aggression, Defence Secretary Ben Wallace said on Thursday. Speaking on a visit to Warsaw, Wallace called Poland a “very old ally.” Since the Russian invasion of Ukraine began on Feb. 24, Poland has taken in nearly 1.9 million refugees and has also been the primary route for supplies being shipped into Ukraine. “It is very right that Britain stands by Poland as Poland carries much of the burden of the consequence of this war and stands tall and brave to stand up to the threats from Russia,” Wallace told a news conference. The announcement of the deployment of the Sky Sabre missile defence system to Poland comes after last Sunday’s Russian missile attack on the Yavoriv military training site in western Ukraine, just 12 miles away from the Polish …