 Leaders from 32 countries gathered for handshakes and a welcome ceremony in Washington, where the stifling summer humidity hangs in the air with the clouds of anxiety surrounding this summit. It had opened with a presentation of resolve by President Biden in the face, he said, of Russian aggression and a claim the alliance has never been stronger. The US Secretary of State, Antony Blinken, said a significant package of further military support for Ukraine would be unveiled by the end of the summit, starting with fighter jets.