amy kellog has the report. >> reporter: another killing, this time a political one.outh korea defense minister cay young handing in his resignation amongst harsh criticism. south korean president accepting kim's resignation saying that kim kim's replacement will be named friday. meanwhile, north korea amping up it's rhetoric. threatening more attacks if it is quote provoked again while placing blame on the united states. >> we should not thoughtlessly shelter. >> but south korea has more military exercises planned for sunday, this time with the american military at its side. the same time of exercises that sparked the initial attack by the north. >> it will display the strength of the close u.s. and north korea alliance. >> reporter: the strike group as been sent to participate in those exercises. those exercises have been planned for a long time. in london, amy kellog, fox news. >>> a federal grand jury has decided there is enough evidence to try a humble county man on charges he sent a threatening letter to president obama. he's accused of writing i will kill the p

amy kellog has the report. >> reporter: another killing, this time a political one.outh korea defense minister cay young handing in his resignation amongst harsh criticism. south korean president accepting kim's resignation saying that kim kim's replacement will be named friday. meanwhile, north korea amping up it's rhetoric. threatening more attacks if it is quote provoked again while placing blame on the united states. >> we should not thoughtlessly shelter. >> but south korea has more military exercises planned for sunday, this time with the american military at its side. the same time of exercises that sparked the initial attack by the north. >> it will display the strength of the close u.s. and north korea alliance. >> reporter: the strike group as been sent to participate in those exercises. those exercises have been planned for a long time. in london, amy kellog, fox news. >>> a federal grand jury has decided there is enough evidence to try a humble county man on charges he sent a threatening letter to president obama. he's accused of writing i will kill the p