Blanc's defensive blast.
Karim Benzema scored twice and Franck Ribery and Jeremy Menez were also on target as Les Bleus extended their unbeaten streak with a commanding performance in Le Mans.
There were moments of concern for the hosts, however, with Estonia enjoying several chances to open the scoring in the first period.
Blanc insists those early scares were all self-inflicted, and called on his back four of Mathieu Debuchy, Adil Rami, Philippe Mexes and Patrice Evra to raise their game.
"I'm not going to beat around the bush. Our defence was not good enough," Blanc told reporters.
"It was an easy game, very easy... I said to them, 'this is not your day - the team is dominating out there and yet we're getting ourselves in trouble'.
"You have to understand that it wasn't the opposition that was causing us problems. We have to have a long hard think about what happened out there."
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|Publication:||Western Mail (Cardiff, Wales)|
|Date:||Jun 7, 2012|
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