Britain's top diplomat called Wednesday for Western allies to send tanks, warplanes and other heavy weapons to Ukraine, saying fears of escalating the war were misplaced and "inaction would be the greatest provocation." (April 28) Subscribe for more Breaking News: http://smarturl.it/AssociatedPress Website: https://apnews.com Twitter: https://twitter.com/AP Facebook: https://facebook.com/APNews Instagram: https://www.instagram.com/APNews/ ​ You can license this story through AP Archive: http://www.aparchive.com/metadata/youtube/fc28c9468c43454caf6d6aadcaba0e5a