Front camera shutter not open iPhone 4

basic troubleshooting steps include restore as new device.....have you restored as NEW?  Try this and before reinstalling ANY 3rd party apps.  See if the camera now works.  If so, then you know that one of your apps is corrupt.  If not, then you have a hardware issue and you'll need to bring your phone into Apple for evaluation and probable exchange.

I did everything including the delet all software And reinstallation of version 5.0.1 I still have a warranty The problem is I do not live in the United States and I have no idea where there is hardware support of Israel

That's unfortunate because warranty service in generally only valid in the country of purchase.  If the phone was purchased in the US, you'd have to send your phone to someone who in turn could bring the phone into Apple.

If you can't do this, you'll have to void your warranty and pay to have a 3rd party try and fix your phone.  This is the problem with purchasing an iPhone away from the country of intended use.