President Trump is saying that Iran appears to be responsible for the weekend attacks on oil facilities in Saudi Arabia. We look at where things are likely to go from here. Guest: David E. Sanger, a national security correspondent for The New York Times. For more information on today’s episode, visit nytimes.com/thedaily. Background reading: President Trump said that the United States was prepared for war if necessary, but that he would “like to avoid” a military conflict with Iran.Mr. Trump’s response to the attacks offered insight into his deference to the Saudi royal family.