details about a halloween knife attack that left more than a dozen injured on a train in tokyo. live from cnn center, this is cnn newsroom with rosemary church. good to have you with us. well, world leaders will be gathering in glasgow in the hours ahead for a summit set to tackle the urgent challenges of climate change. the u.n. s cop26 conference is kicking off just as the g20 meeting wrapped up in rome on sunday. leaders there ended their summit with an agreement on climate, but no firm pledges. several key goals included ending coal financing by year s end, and containing global warming to 1.5 degrees celsius above preindustrial levels.