Complex sentence: In response to the events, Morsi was given a 48-hour ultimatum by the military to meet their demands and to solve political differences, or else they would intervene by "implementing their own road map" for the country.
Split into simpler sentences: In response to the events, Morsi was given a 48-hour ultimatum by the military to meet their demands and to solve political differences. Or else, they would intervene by "implementing their own road map" for the country.