We all learned in high school science that "correlation does not equal causation." But that doesn't mean that correlations, especially strong ones, can simply be waved away.So consider this:
"... as foreign aid to the Palestinians increases, so do Palestinian acts of murder. When foreign aid to Palestinians decreases, Palestinian acts of murder correspondingly decrease. In fact, the more money they receive, the more murders the Palestinians commit, the less money they receive, the less murders they commit – it is practically a 100% correlation.
The graphs and more information are here.