Iran and Israel continue to trade strikes, State Dept. tells U.S. citizens to exercise caution

Welcome back to Squawk on the Street. Iran and Israel continued it as trade strikes following America's attack on Iran's nuclear facilities over the weekend. State Department telling US citizens worldwide to exercise increased caution.NBC's Kier Simmons joins us with the latest from northern Iraq this hour. Kier, good morning. Hey there.Good morning. And let me just show you over to my left here. That is the US base here in Billil there in the distance.that is perhaps closest to Iran. They are on high alert ...