Shugaba Obama ya yiwa Shugaba Jonathan alkawari cewa Amurka zata taimaki Najeriya ta yaki ta'adanci. A ganawarsu kafin Jonathan ya gabatar da jawabinsa wurin babban taron Majalisar Dinikn Duniya, shugabannin sun tattauna kan harin ta'addanci da aka kai a kasar Kenya lamarin da yayi kwatankwacin abun dake faruwa a Najeriya.