Where did Muammar Gaddafi get the weapons he has used against his own people? From the U.S. and its allies in Europe, that's where.
In 2008, the Bush administration approved $46 million in arms sales to Libya and in 2009, Obama approved $77 million, but a large part of that deal did not go through, cutting it down to $17 million. Meanwhile, also in 2009, several European nations exports of weaponry to Libya added up to $470 million.
The U.S. leads the world (Russia is a close second) in arms sales at over $71 billion per year.