this is bbc news, the headlines. sudan's army launches a major attack on khartoum — as it attempts to retake areas held by the rival rsf militia. tanks and heavy artillery have been deployed to the capital. residents are warned to stay indoors. the capital is home to some 7 million people. nurses in half of england's hospitals are set to strike later this evening. nhs chiefs warn that care is at risk. but unions call on the government to return to the negotiating table. tens of thousands of people attend an open air mass in central budapest on pope francis�* final day in hungary. the pontiff calls on hungarians to be "open" towards migrants coming from outside europe. the british public will be invited to swear allegiance to king charles during his coronation on saturday. the mainly christian service