Eeh, not really. German's think because some Swiss resent them a little, it is all about them.
EU countries, especially Italy, Germany and Portugal are the biggest immigration source in Switzerland (EU/EFTA immigration ~60%), Germany is ~13% of the total.
Non EU, especially outside of Eurepean immigration is a smaller part, but if you looked at SVP pamphlets you see a very different picture.
Iran is Turkey's neighbor and had relatively good relations for very long time, even with the strongman it doesn't make a shred of sense to change this. Especially for USA which has a tendency to back stab Turkey in any occasion (They could not get away from the time when Turkey did not allow them to invade Iraq from north, the previous BS war)
Attacking as in a couple of rockets heading US bases which were intercepted. Of course nothing would happen, why would Turkey (or other European countries) join this pointless war?
I would take these articles about vitamin D with a grain of salt, there is a big vitamin D supplement and testing market and most of the studies about the miracles of it are dubious at best