winds, and flash flooding. the threat expected to last throughout the night, and what millions could face for the morning commute. nearly 2,000 flight cancellations already, and that number is growing. in the southwest, dangerous heat with no end in sight. rob marciano times it all out. the urgent manhunt for a murder suspect in pennsylvania. officials say he has military training and self-taught survivalist skills. they claim they found stockpiles of supplies or campsites they believe are associated with him and consider him armed and dangerous. and in the west, authorities near sacramento desperately searching for another murder suspect, who escaped overnight. alex presha is standing by. president biden touching down in the uk ahead of a crucial nato summit after saying ukraine is not yet ready to join the alliance, and the growing divide over cluster munitions. the biden administration is defending its controversial decision. what president zelenskyy told our martha
i don t think it s ready for membership in nato. the war now marking 500 days since russia s invasion. reporter: i m weijia jiang, traveling with president biden. who is defending his decision to provide cluster bombs to ukraine. why he says it s necessary. across the globe, treasury secretary janet yellen wraps up marathon talks in china. could icy relations begin to thaw? we believe the world is big enough for both countries to thrive. random rampage. a man riding a scooter open fire, killing one, injuring three others in new york city. plus, stormy sunday. intense rain, hail and floods swamp millions. with the week ahead calling for more extreme heat. later, a summer of strikes heats up. u.p.s. workers this weekend practiced walking out as mobilizing workers test their clout in a tight labor market. announcer: this is the cbs weekend news from new york. good evening, everyone. thank you for joining us. jericka is off. i m major garrett. we begin with