US President Joe Biden has pledged continued support to Ukraine in the face of massive Russian airstrikes – including advanced air defence systems. Biden assured Ukrainian President Volodymyr Zelensky in a telephone call that he would continue to provide Ukraine with the support it needs for its defence, the White House said on Monday. In the call, Zelensky stressed that air defence is currently the highest priority in terms of arms deliveries. The US should also show leadership on a tough stance by the Group of Seven (G7) major industrialized nations and on support for a condemnation of Russi…