DAN PELESCHUK and GUY FAULCONBRIDGE RUSSIAN President Vladimir Putin has met his commanders in two regions of Ukraine that Moscow claims to have annexed, while Russian forces stepped up heavy artillery bombardments and air strikes on the devastated Ukrainian city of Bakhmut. Ukraine's President Volodymyr Zelenskiy, meanwhile, visited troops in the eastern town of Avdiivka, about 70 km (43 miles) southwest of Bakhmut, and was briefed on the battlefield situation, his office said. The Kremlin said Putin on Monday had attended a military command meeting in Ukraine's southern Kherson region and visited a national guard headquarters in eastern Luhansk. Putin heard reports from…