President Biden announced new commitments to air defense aid for Ukraine at a NATO summit speech, including Patriot missile systems from the US and its allies. The aid comes over two years into Russia's invasion of Ukraine as lawmakers remain divided on continued funding for Ukraine's defense. Biden hopes to reassure Democrats of his electability at the NATO summit following a poor debate performance against Donald Trump in June. Biden will hold a solo press conference on Thursday which is seen as a key test of whether he can handle unscripted questions.