NEW : Secretary of state arrives in Tokyo . It has expressed skepticism that the mixture of sanctions and negotiations being pursued at the moment by the United States and European nations is deterring Tehran from pursuing nuclear weapons . Clinton 's 13-day trip will involve key Israeli and Palestinian issues . She will visit Afghanistan , as well as meeting Israeli and Palestinian leaders . In Afghanistan , she will attend a conference about Afghanistan 's future .
NEW : Secretary of state arrives in Tokyo . Clinton 's 13-day trip will involve key Israeli and Palestinian issues . She will visit Afghanistan , as well as meeting Israeli and Palestinian leaders . In Afghanistan , she will attend a conference about Afghanistan 's future .