Trump: "I am not satisfied with what i've heard" from Saudis about Khashoggi killing; Trump repeats unfounded claim "Unknown Middle Easterners" in migrant caravan heading towards U.S.; Sources: Mueller examining Roger Stone's wikileaks ties, whether he shared info with Trump campaign; Source: Surveillance captures Saudi "Body double" in Khashoggi's clothes after he was killed; Trump: "I am not satisfied with what i've heard" from Saudis about Khashoggi killing; Stoking fears about migrant caravan; New strains on Trump-Putin relationship; Trump arriving in Texas for rally with senator Ted Cruz; Critics: Trump's campaign blitz filled with misinformation; trump "I'm terminating" Reagan-era nuclear missle treaty; Putin wants "explanations via Knit