Our exclusive guest this week is Republican presidential candidate Fred Thompson, former Tennessee senator. Plus, The Des Moines Register's David Yepsen joins us.

We're just days away from the first-in-the-nation caucuses in Iowa where voters will begin choosing their party's nominees for president. The race is getting tighter as each candidate makes a final push to win the Hawkeye state's caucuses. Fred Thompson made a late entry into the field and started with high numbers. Now he's scrambling for a good showing with the hopes of gaining some much needed momentum. How does he plan to make it happen? We'll speak exclusively with the former Tennessee Senator from the campaign trail.

Plus, we'll get an insider's look at the first battleground for 2008 with one of the state's most influential and respected political minds. If any man knows Iowa politics, it's the Des Moines Register's David Yepsen. We'll ask David who's up, who's down and what surprises we might expect when the caucuses arrive.

Then, the death of former Prime Minister Benazir Bhutto in Pakistan has made the race instantly more serious. While the turmoil unfolds each candidate in the U.S. is making their case for why they are best suited to lead the nation. Has the sudden assassination brought terrorism to the forefront of voters' minds? Joining us to discuss the impact will be Brit Hume, Washington managing editor of FOX News; Mara Liasson of National Public Radio; Bill Kristol of the Weekly Standard and Juan Williams of National Public Radio.

So check your local listings and we'll see you on the next "FOX News Sunday."