Marko is a Christian Serbian name and thus unlikely of an Iraqi devoted Muslim. It could be a misspelling of Markooz, which is a Muslim Arabic name.
When Codwell is told about Julie Allen's murder, she paraphrases the quote "The death of a man is a tragedy. The death of millions is a statistic", and attributes it to Joseph Stalin.
Some people believe this is incorrect and claim it has been misattributed as Stalin did not say it at all, however Stalin's use of the phrase was reported in an article at the time, by a journalist who heard the speech.
The first written use of the sentiment was 1759 and it has appeared in multiple poems, speeches and academic and political arguments since. Stalin may have been paraphrasing, but he did say it.
Emma was told not to bring her phone to Turkey, so the terrorists would have had no way to contact her until she got to the apartment. They would have had to give Emma the address in the emails, so Monty could have just relayed the information to the team. There was no need for Simmons and Jarvis to use the background noise on Emma's voicemail message to find her destination.