拜登施壓，要求讓美國武器攻擊俄羅斯

Pressure is mounting on US President Joe Biden to authorize Ukraine to utilize weapons provided by the West to target Russian territory. A number of US allies have signaled their willingness to consider this possibility after expressing concerns about escalation for several months. Russia's Vladimir Putin has issued a warning of 'serious consequences', particularly for what he described as 'small countries' in Europe. US Secretary of State Antony Blinken has stated that Washington’s position on the matter would 'adapt and adjust' based on changing battlefield conditions. He is currently in Prague, Czech Republic, for a meeting of Nato foreign ministers. White House national security spokesman John Kirby has mentioned that despite the evolution of US support for Kyiv, 'right now, there's also no change to our policy'. Ukraine has been facing challenges countering a Russian offensive in the eastern part of the country, while the city of Kharkiv has endured weeks of deadly attacks, often initiated by Russia from military outposts near the Ukrainian border.