Ukraine’s breakthrough in securing heavy tanks from the U.S. and Germany has ignited talk about sending F-16 fighter jets to Ukraine to defend the nation’s skies. The government of Ukraine quickly renewed its calls for world-class fighter jets after it secured the victory on tanks, arguing it needed the help to defend itself against Russia. Shortly after the U.S. announcement on tanks, Yuriy Sak, an adviser to Ukraine’s defense secretary, told The Hill that Kyiv would do everything possible to secure the fighter jets. And Dymytro Kuleba, Ukraine’s minister of foreign affairs, tweeted Wednesday morning that Ukraine has “new tasks ahead,” naming western…