Vietnam has repeatedly called on Malaysia for a fair trial of one of its citizens accused of the murder of Kim Jong-nam, the half-brother of the North Korean leader, the southeast Asian nation's foreign ministry said on Thursday.<br /><br />Vietnam had urged Malaysia to free Doan Thi Huong, accused of the 2017 VX poison murder of Kim Jong Un's half-brother, after the same charge was dropped against Indonesian Siti Aisyah.