Israel vs. Iran

I woke this morning to a story on the news about a Palestinian man who drove a heavy piece of construction equipment through a crowd in Jerusalem, killing 4 people. The news people are talking about the continuing strain between Israel and Iran. Iran is perfecting their nuclear weapons and Israel is fighting to keep its nation. I don't know what will happen with these 2 countries, but it doesn't look good. I'm afraid that the world will be forced to take sides and it is scary what that could mean.