Ukrainian President Volodymyr Zelensky has called on his country’s allies to ramp up support in the fight against the Russian invasion, in remarks to the Munich Security Conference on Saturday. Zelensky was in southern Germany on the second day of the 60th edition of the Munich Security Conference, an annual gathering of top political and defence officials to debate international security policy. “If we don’t act now, Putin will succeed in turning the next few years into a catastrophe,” the Ukrainian president told the conference. Zelensky’s comments came after the address of German Chancellor…