German Foreign Minister Annalena Baerbock told French TV channel LCI that Poland has not formally asked for Berlin's approval to share some of its German-made Leopards but added "if we were asked, we would not stand in the way.''
German officials "know how important these tanks are" and "this is why we are discussing this now with our partners,'' Baerbock said in interview clips posted by LCI.
Ukraine's supporters pledged billions of dollars in military aid to Ukraine during a meeting at Ramstein Air Base in Germany on Friday. International defense leaders discussed Ukraine's urgent request for the Leopard 2 tanks, and the failure to work out an agreement overshadowed the new commitments.
Germany is one of the main donors of weapons to Ukraine, and it ordered a review of its Leopard 2 stocks in preparation for a possible green light. Nonetheless, the government in Berlin has shown caution at each step of increasing its military aid to Ukraine, a hesitancy seen as rooted in its history and political culture.
Germany's tentativeness has drawn criticism, particularly from Poland and the Baltic states, countries on NATO's eastern flank that feel especially threatened by Russia's renewed aggression.
Polish Prime Minister Mateusz Morawiecki said that if the fellow NATO and European Unio member did not consent to transferring Leopard tanks to Ukraine, his country was prepared to build a "smaller coalition'' of countries that would send theirs anyway.
"Almost a year had passed since the outbreak of war,'' Morawiecki said in an interview with Polish state news agency PAP published Sunday. "Evidence of the Russian army's war crimes can be seen on television and on YouTube. What more does Germany need to open its eyes and start to act in line with the potential of the German state?''
Previously, some officials in Poland indicated that Finland and Denmark also were ready to send Leopards to Ukraine.
Earlier Sunday, the speaker of the lower house of Russia's parliament, State Duma Chairman Vyacheslav Volodin, said governments that give more powerful weapons to Ukraine risked causing a "global tragedy that would destroy their countries.''
"Supplies of offensive weapons to the Kyiv regime would lead to a global catastrophe,'' Volodin said. "If Washington and NATO supply weapons that would be used for striking peaceful cities and making attempts to seize our territory as they threaten to do, it would trigger a retaliation with more powerful weapons.''
French President Emmanuel Macron, meanwhile, said Sunday that he had asked his defense minister to "work on'' the idea of sending some of France's Leclerc battle tanks to Ukraine.
Macron spoke during a news conference in Paris with German Chancellor Olaf Scholz as France and Germany commemorated the 60th anniversary of their post-World War II friendship treaty. In a joint declaration, the two countries committed to their "unwavering support'' for Ukraine.
France will make its tank decision based on three criteria, Macron said: that sharing the equipment does not lead to an escalation of the conflict, that it would provide efficient and workable help when training time is taken into account, and that it wouldn't weaken France's own military.
Scholz did not respond when asked about the Leopard 2 tanks Sunday, but stressed that his country already has made sizable military contributions to Ukraine.
"The U.S. is doing a lot, Germany is doing a lot, too," he said. "We have constantly expanded our deliveries with very effective weapons that are already available today. And we have always coordinated all these decisions closely with our important allies and friends.''
In Washington, two leading lawmakers urged the U.S. on Sunday to send some of its Abrams tanks to Ukraine in the interests of overcoming Germany's reluctance to share its own, more suitable tanks.
"If we announced we were giving an Abrams tank, just one, that would unleash'' the flow of tanks from Germany, Rep. Michael McCaul, the Republican chairman of the House Foreign Affairs Committee, told ABC's "This Week on Sunday.'' "What I hear is that Germany's waiting on us to take the lead.''
Sen. Chris Coons, a Democrat who is on the Senate Foreign Relations Committee, also spoke up for the U.S. sending Abrams.
"If it requires our sending some Abrams tanks in order to unlock getting the Leopard tanks from Germany, from Poland, from other allies, I would support that,'' Coons said.
Dmitry Medvedev, the deputy head of the Russian Security Council, said Friday's U.S.-led meeting at the air base in Germany "left no doubt that our enemies will try to exhaust or better destroy us,'' adding that "they have enough weapons'' to achieve the purpose.
Medvedev, a former Russian president, warned that "in case of a protracted conflict,'' Russia could seek to form a military alliance with "the nations that are fed up with the Americans and a pack of their castrated dogs."
Ukraine has argued it needs more weapons as it anticipates Russia's forces launching a new offensive in the spring.
Oleksii Danilov, the secretary of Ukraine's Security and Defense Council, warned that Russia may try to intensify its attacks in the south and in the east and to cut supply channels of Western weapons, while conquering Kyiv "remains the main dream'' in President Vladimir Putin's "fantasies,'' he said.
In a column published by online newspaper Ukrainska Pravda. he described the Kremlin's goal in the conflict as a "total and absolute genocide, a total war of destruction"
Among those calling for more arms for Ukraine was the former British prime minister, Boris Johnson, who made a surprise trip to Ukraine on Sunday. Johnson, who was pictured in the Kyiv region town of Borodyanka, said he traveled to Ukraine at the invitation of President Volodymyr Zelenskyy.
"This is the moment to double down and to give the Ukrainians all the tools they need to finish the job. The sooner Putin fails, the better for Ukraine and for the whole world,'' Johnson said in a statement.
The last week was especially tragic for Ukraine even by the standards of a brutal war that has gone on for nearly a year, killing tens of thousands of people, uprooting millions more and creating vast destruction of Ukrainian cities.
A barrage of Russian missiles struck an apartment complex in the southeastern city of Dnipro on Jan. 14, killing at least 45 civilians. On Wednesday, a government helicopter crashed into a building housing a kindergarten in a suburb of Kyiv. Ukraine's interior minister, other officials and a child on the ground were among the 14 people killed.
Zelenskyy vowed Sunday that Ukraine would ultimately prevail in the war.
"We are united because we are strong. We are strong because we are united," the Ukrainian leader said in a video address as he marked Ukraine Unity Day, which commemorates when east and west Ukraine were united in 1919.