A million-dollar gold heist in Thailand’s far south by armed robbers who blocked roads with spikes and set explosives to seal their escape across the Malaysian border has rattled the Thai security establishment, as efforts to reignite peace talks in an area roiled by insurgency continue to fall flat. Around 20 men working in three teams carried out the October 5 theft from a gold shop in Sungai Kolok, bordering Malaysia’s Kelantan State. The theft of hundreds of gold ornaments and jewellery...