Biden and US allies face new dilemma on Ukraine aid
Ukraine’s military took a defiant stand this weekend — refusing to give in to Russia’s demand for Kyiv’s troops in the port city of Mariupol to surrender — at the same time that President Joe Biden and his allies face a new precipice in deciding how far the US can go in arming the embattled country, as Russia signals that it may take more aggressive action to stop the flow of weapons from the US and NATO.