You can argue that Iran is a threat to all, but the reality is that most people in western Europe only think it's a threat to Israel. And they don't care much about that. They see Israel keeping an entire population captive under Israeli guns and they think 'why should we worry that bully Israel is afraid of being bullied by Iran?' End the occupation and we'll all take a lot more interest in protecting Israel. Keep the occupation and you're on your own.
Firebomb thrown during demonstration in northern Israeli town of Umm al Fahm (Haaretz)
from the article: Iran will be able to build nuclear bomb within months, IAEA says