from london. also coming up the u.n.'s libya envoy insists piece talks will continue despite fierce fighting in and around tripoli. nigeria's presidential election debate goes ahead without the main opposition contender. why a may in peru wants to paint over every mural in lima's historic center. with start in yemen where houthi forces have seized control room of the airport of the third largest city, taiz. the shia group is in charge of a large swath. taiz is a key targwhere president hadi has taken refuge. at his request, the u.n. security councile sub sill is due too meet in an hour.