white house correspondent peter al vander is traveling with the president and has this report on the response from the obama administration. >> the viewers like to say here in hawaii, aloha. president obama has been getting daily updates. the white house said when he landed in hawaii he spoke by phone to the national security aides. among them, national security adviser susan rice who directed an audio recording of people of south sudan, urging them not to let his country be torn apart by violence and suffering. on sunday the president sent a letter to congressional leaders, letting them know that service members had taken part in saturday's mission to evacuate americans. most significantly he left open the option of further action if necessary. and interests in that region. the president told his team to work with the un and said that south sudan leaders have a responsibility to protect americans. conflict can only be resolved peacefully through negotiations and any effort to seize power began with a long standing support. the state department continues to urge all american citizens