NAIROBI, Kenya (AP) — Kenyan opposition leader Raila Odinga called Sunday for "international intervention" in the country's election crisis, saying at least 31 supporters have been killed by police and militia since his return from an overseas trip on Friday. Odinga said Kenya "was being pushed to the precipice" after residents of a Nairobi slum protested the killing of at least 13 people in an overnight attack by unknown gunmen.