By SALEH MWANAMILONGOAssociated PressA high military court in Congo convicted former President Joseph Kabila of treason and war crimes Tuesday on accusations of collaborating with anti-government rebels and sentenced him to death. Kabila’s political party called the verdict politically motivated. The high military court in Kinshasa ruled Tuesday that Kabila was guilty of treason, war crimes, conspiracy and organizing an insurrection together with the M23. The court said prosecutors presented testimony implicating Kabila from Eric Nkuba, the imprisoned former chief of staff of rebel leader Corneille Nangaa. The court cited Nkuba as saying that Kabila regularly communicated with Nangaa by phone about how to overthrow the government of current President Felix Tshisekedi.