Afghan President Hamid Karzai has accused the Taliban and the US of working together to convince Afghans that violence will worsen if foreign troops leave the country. Karzai said that two deadly suicide bombings over the weekend demonstrated that the insurgent group is conducting attacks at the service of America. He said both Washington and the Taliban want US forces to stay beyond the end of 2014, when most U.S.-led forces are scheduled to leave Afghanistan.