In the 1990s, New Gingrich addressed the Israeli Knesset against the wishes of the Clinton Administration
Not necessarily.
Regardless, U.S. Speakers of the House have NO business trying to deal directly with foreign governments, friendly or hostile, whether it be Wright, Gingrich, or Pelosi. The Constitution plainly says that relations between the U.S. and foreign nations can only be accorded through the Executive Branch, and NOT the Legislative Branch, which only has the power to approve or disapprove treaties (through the Senate's advise and consent power).