Who killed Kim Jong Nam?
CNN's Paula Hancocks reports.
02:42 - Source: CNN
Kim Jong Nam's death 17 videos
Kim Jong Nam
Who killed Kim Jong Nam?
02:42
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Royal Malaysian Police escort Vietnamese defendant Doan Thi Huong (2nd L) after her trial at the Shah Alam High Court in Shah Alam, outside Kuala Lumpur on October 2, 2017, for her alleged role in the assassination of Kim Jong-Nam, the half-brother of North Korean leader Kim Jong-Un.
Two women pleaded not guilty on October 2 to murdering the half-brother of North Korea's leader at the start of their trial in Malaysia, as prosecutors alleged they practised for the Cold War-style assassination before carrying it out. / AFP PHOTO / MOHD RASFAN        (Photo credit should read MOHD RASFAN/AFP/Getty Images)
Accused killers of Kim Jong Nam to stand trial
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REMOVES REFERENCE TO RE-ENACTMENT - Vietnamese Doan Thi Huong is escorted by police as she arrives at Kuala Lumpur International Airport in Sepang, Malaysia, Tuesday, Oct. 24, 2017.  The two women accused of killing Kim Jong Nam, the North Korean leader's half brother, are touring at the Malaysian airport as participants in the murder trial visit the scene of the attack. (AP Photo/Sadiq Asyraf)
Kim Jong Nam murder suspects visit crime scene
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Kim Jong Nam murder suspects heading to trial
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Kim Jong Nam had VX antidote at time of murder
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Kim Jong Nam, left, was the half-brother of North Korea's leader Kim Jong Un, right.
Theories behind Kim Jong Nam's murder
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Kim Jong Nam's body returned to North Korea
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Kim Jong Nam's son sends message from hideout
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Royal Malaysian Police personnel keep watch behind a police line drawn across the entrance to the North Korean embassy in Kuala Lumpur on March 7, 2017, following a directive barring North Korean embassy staff from leaving the country. 
Malaysia said March 7 that North Korea embassy staff are barred from leaving the country, in a tit for tat response after Pyongyang banned all Malaysian citizens from leaving.  / AFP PHOTO / MOHD RASFAN        (Photo credit should read MOHD RASFAN/AFP/Getty Images)
Dual travel bans between Malaysia and N. Korea
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Security footage from Fuji TV appears to show the moment Kim Jong Un was attacked February 13.
Report: 2 hit teams stalked Kim Jong Nam
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VX nerve agent killed North Korean in airport
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North Korea's history of covert operations
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4 N. Koreans sought in death of Kim Jong Nam
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Murder suspect thought she was in TV prank
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The car of ambassador of North Korea to Malaysia leaves the forensic department at the hospital in Kuala Lumpur, Malaysia on Wednesday, Feb. 15, 2017. Kim Jong Nam, the half brother of North Korean leader Kim Jong Un, was killed Monday in Malaysia in what appeared to be an assassination carried out by female agents possibly armed with a poisoned needle. (AP Photo/Vincent Thian)
Kim Jong Nam's death in Malaysia
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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.
Second arrest in Kim Jong Nam's death
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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.
Officials: Kim Jong Un's half-brother murdered
02:23
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