Pressure grew on Germany on Saturday to authorize the transfer of Leopard 2 battle tanks to Ukraine, even as Ukrainian officials signaled that they believed it would be only a matter of time before the German-made tanks arrived.

The pressure was coming from several quarters. In a joint statement on Twitter, the foreign ministers of Estonia, Latvia and Lithuania urged Germany to "provide Leopard tanks to Ukraine now.”

They added: "This is needed to stop Russian aggression, help Ukraine and restore peace in Europe quickly. Germany as the leading European power has special responsibility in this regard.”