As you can see looking at the authors, the group is a mixture of Jews and non-Jews, but considering Jews are only 2% of the US, the CSP must be 50% Jewish. Nevertheless, there are many non-Jews in the group who share an agenda with the Jews.
CSP was originally a hardline Cold War group that grew out of the Reagan Era’s stepped up war on the USSR. Paul Nitze (gentile), Frank Gaffney (gentile), Richard Perle (Jewish), Paul Wolfowitz (Jewish), and Jeane Kirkpatrick (gentile) were some of the big Reagan era names that continued on in the 1990’s, graduating from Reagan era Cold Warriors to the new War On Terror nonsense of the 2000’s and 2010’s. Later members included Roger Noriega (gentile), Newt Gingrich (gentile), John Bolton (gentile) and Donald Feith (Jewish).
CSP’s current concerns are a fanatical obsession with Iran and extreme anti-Muslim fearmongering, along with a focus on combating extremist Islam which in itself is laudable. Looking at the front page, you can see that the connection with Netanyahu and the Israeli Right is still very strong. One article appears to be actually authored by the Israeli ambassador himself!
As you can see, the big names are a mix of Jews and non-Jews, but they all share a strong alliance with the Israeli Right represented in the flesh now by the very reactionary Netanyahu. I do not think most Americans realize how far right Netanyahu is. He is like an Israeli George W. Bush for lack of a better comparison.
It was from here and a few other organizations that the entire neocon project was launched during the 1990’s. It was from these groups that such seminal documents as Securing the Realm and the founding document of the Project for the New American Century.
Another huge group is called JINSA (Jewish Institute for National Security Affairs).
The entire neocon project of the 2000’s, including the Iraq War itself, was cooked up by just a few of these organizations. I imagine that we can pin down maybe 25 people in Washington and Tel Aviv who were primarily responsible for setting the stage for the Iraq War. And yes, many but not all of them were Jewish.