 but President Biden insists he can beat Trump. Alison Keys, CBS News, Washington. Military assistance to Ukraine is top of NATO's agenda in Washington today, where leaders are expected to call on China to quit helping Russia. Secretary General Jens Stoltenberg. Then continue to fuel the war in Europe that constitutes the biggest security challenge, pro-security, since the Second World War. So this is a challenge for the alliance. Let's see how far we're willing to go as allies.