5 things to know for May 18: Prayer event, Trump’s new warning, primaries, Ebola outbreak, severe storms

By Alexandra Banner, CNN Many of us already have a complicated relationship with Mondays. This one could be especially rough for New Yorkers: city officials are warning of major travel disruptions as strikes disrupt America’s busiest commuter railroad. Here’s what else you need to know to get up to speed and on with your day.