A man watches a television showing news reports of Kim Jong-Nam, the half-brother of North Korean leader Kim Jong-Un, in Seoul on February 14, 2017.

Kim Jong Un stood to gain so little from assassinating his own half-brother that such a killing would be little more than a senseless murder by an increasingly paranoid regime, according to experts and officials.

Intelligence agencies in South Korea believe the dictator's half-brother, Kim Jong Nam, was killed by two women at an airport in Kuala Lumpur, Malaysia.