Veteran newscaster John Gibson gets to the core of the most salient issues facing America today as host of FNC's hard-hitting primetime show The Big Story with John Gibson, airing Monday through Friday at 5 p.m. ET, with expert legal analysis from Judge Andrew Napolitano and in-depth field reports from correspondent Heather Nauert.

March 31:

Coalition troops close in on Baghdad from the north, south and west
• Retired Army Col. Glenn Lackey

Baghdad now says outsiders from other Arab countries are joining the battle against coalition forces
Gregory Copley, president of the International Strategic Studies Association
• Former CIA officer Michael Swetnam, president of the Potomac Institute for Policy Studies

War is never predictable. That's why military planners are working on many different scenarios
• Retired Army Major Dana Dillon, senior analyst at the Heritage Foundation

Each side of Operation Iraqi Freedom is blaming the other for war crimes. What constitutes a war crime?
• Judge Andrew Napolitano, FNC senior judicial analyst

Be sure to tune into The Big Story with John Gibson ... weekdays at 5 p.m. ET.

Note: All guests and topics subject to change