Complex sentence: He was an unsuccessful candidate for senator in the 2007 Philippine Elections, and claiming himself as "the poorest sultan in the world", Kiram revived the North Borneo dispute between the Philippines and Malaysia which led to the 2013 Lahad Datu standoff.
Split into simpler sentences: He was an unsuccessful candidate for senator in the 2007 Philippine Elections. Self-described as "the poorest sultan in the world", Kiram revived the North Borneo dispute between the Philippines and Malaysia which led to the 2013 Lahad Datu standoff.