The deadly heatwave that’s set temperature records across western Europe for more than a week has shifted east to scorch Hungary, Romania and the Balkans.Hungary’s Budapest is expected to top 40 degrees Celsius (104F) on Tuesday, according to models from the European Centre for Medium-Range Weather Forecasts.Belgrade in Serbia and Bucharest in Romania will reach 38 degrees and 37 degrees, respectively, on Monday.Red warnings for extreme heat have been issued in Poland, Hungary, Romania,...