Tonight on Special Report with Brit Hume:

Less than three weeks after the United States' reconstruction agency opens for business in the postwar chaos of Baghdad, one top U.S. official leaves her post, the chief administrator is preparing to leave and a new administrator arrives in the region. L. Paul Bremer (search), the new American civilian administrator of Iraq, declares he is "delighted to be here" to begin helping the country piece itself together and take on a democratic course.

Plus:

• At least 37 people are killed and scores of others are wounded when a truck bomb rips through a government compound in northern Chechnya (search), destroying a two-story building and damaging four other buildings and eight houses.

• President Bush is trying to parlay popularity from military successes in Iraq into momentum for hefty tax cuts he believes will stimulate the economy -- and heighten his chances for re-election. Beginning a two-day swing through three states to promote his tax-cut proposal, the president is meeting with small-business owners near Albuquerque, N.M. Then he is off to Omaha, Neb., to speak to workers at a plastics plant.

• Egypt offers to help the United States on peacemaking between Israel and the Palestinians, but declines to go along with the Washington's attempt to sidestep Yasser Arafat.

• The United States and Iran (search) hold several meetings in Geneva, Switzerland, in an effort to ease friction between the two countries.

• This week, officials across the nation will have their hands full with an imaginary "dirty bomb" in Seattle and the fake threat of a biological agent in Chicago -- both part of the most extensive bioterrorism drill in the nation's history.

Details on these stories and more on Special Report with Brit Hume.
— Guests and topics are subject to change