据新华社，俄罗斯总统普京5日表示，美国总统特朗普有关重启核试验的言论是一个"严肃问题"。 普京当天与俄安全会议成员召开会议时说，正如他2023年指出的，如果美国或其他《全面禁止核试验条约》缔约国开展核试验，俄罗斯将不得不采 取对等措施。普京当天还指示俄相关部门提交有关核试验准备工作的方案。 ...

Core Viewpoint - Brazilian President Lula stated that if an agreement on tariff issues cannot be reached, the country may seek assistance from the World Trade Organization or take reciprocal measures [1] Group 1 - Brazil is considering seeking help from the World Trade Organization regarding tariff disputes [1] - The potential for reciprocal measures indicates a proactive approach to trade negotiations [1]