(FILES) This file photo taken on May 19, 2022 shows a Polish Leopard tank as troops from Poland, USA, France and Sweden take part in the DEFENDER-Europe 22 military exercise, in Nowogard, Poland. - NATO countries are set to announce new "heavier weapons" for Ukraine, the alliance's chief said on January 18, 2023, as Ukrainian President Volodymyr Zelensky called on his backers to speed up their decision-making. US Secretary of Defence Lloyd Austin will convene a meeting of around 50 countries on January 20, 2023 at the US-run Ramstein military base in Germany, including all 30 members of the NATO alliance. The German-made Leopard 2 is seen as one of the best-performing models worldwide and is widely used across Europe, meaning spare parts and ammunition could be easily sourced. (Photo by Wojtek RADWANSKI / AFP)