 He thanked the Secret Service and law enforcement for their response. The Pennsylvania event was Trump's last rally before next week's Republican National Convention here in Wisconsin. Greg Clugston, Milwaukee. Russian shelling of Ukraine has killed four people as the two countries exchanged drone attacks, one of which set ablaze a Russian oil depot. Ukraine in recent months stepped up aerial assaults on Russian soil, targeting refineries and oil terminals in an effort to slow down the Kremlin's war machine.