There have been clashes in Iran since June 12th and the world is watching and nobody does anything. Why? On the one hand, all major news websites reported today (3rd August) that the Iranian leaders have approved Ahmadinejad as the new president:

"I am endorsing the presidency of this brave, hard-working and wise man as the president of the Islamic Republic of Iran," Supreme Leader Ayatollah Ali Khamenei said, in praise of Ahmadinejad who will be sworn in by parliament Wednesday." (for the full article see: http://www.reuters.com/article/worldNews/idUSL373426820090803)

But on the other hand, the US can threaten Iran with sanctions if they do not stop their nuclear programme:

http://www.spiegel.de/politik/ausland/0,1518,640163,00.html

Why don't Western countries interfere in the Iran's national politics? Iran is killing innocent people, undermining women rights and is above all violating human rights!

To understand more about the Iranian crisis, one should go to BBC. The BBC has put a very good Q&A catalogue together:

http://news.bbc.co.uk/2/hi/middle_east/8101621.stm