Sunday shows preview: Campaigns get personal
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After a week-long feud between GOP front-runners Donald TrumpDonald TrumpFox poll: Trump approval below 50 percent Pelosi gives Trump an incomplete for first 100 days Poll: More say Trump will increase their taxes MORE and Ted CruzTed CruzOvernight Defense: Senators go to White House for North Korea briefing | Admiral takes 'hit' for aircraft carrier mixup | Lawmakers urged to beef up US missile defense Senators get North Korea briefing in unusual WH visit Overnight Tech: FCC chief unveils plan for net neutrality rollback | Tech on Trump's sweeping tax plan | Cruz looks to boost space industry MORE in which their wives were dragged into political attacks, both candidates will tell their sides of the story on Sunday’s political shows.

The latest spat began earlier this week when an anti-Trump super-PAC released an ad featuring a nude Melania Trump, prompting almost daily barrages from the Trump campaign on Cruz and his wife, Heidi.

Though Cruz has repeatedly denied any connection to the super-PAC or its ad, Trump has compared the appearances of his wife and Heidi and threatened to “spill the beans” on her.

Tensions seemed to erupt Friday when Cruz blamed Trump and his “henchmen” for a National Enquirer story that alleges he’s had extramarital affairs.

Secretary of State John KerryJohn KerryEgypt’s death squads and America's deafening silence With help from US, transformative change in Iran is within reach Ellison comments on Obama criticized as 'a stupid thing to say' MORE will also appear on Sunday’s shows to discuss the U.S.’s response to this week’s terror attacks in Brussels.

Sen. Bernie SandersBernie SandersOvernight Energy: Trump orders review of national monuments, claiming ‘egregious abuse’ Dem rep: Trump's tax plan as believable as 'magic, unicorns or Batman' Sanders: Trump tax plan makes 'rigged' system 'worse' MORE will also make the rounds to discuss the results of Saturday’s three Democratic contests in Alaska, Hawaii and Washington state.

ABC’s “This Week:” Donald Trump and Sen. Bernie Sanders

CBS’ “Face the Nation:” Secretary of State John Kerry; Texas Rep. Michael McCaul (R-Texas); John Miller, deputy commissioner, New York Police Department; Michael Morell, former deputy CIA director.

CNN’s “State of the Union:” Sanders; Rep. Mia Love (R-Utah); Sen. Ron JohnsonRon JohnsonGOP rep doesn’t expect a literal border wall Trump should work with Congress to block regulations on prepaid cards Five reasons to worry about the ShadowBrokers hack MORE (R-Wis.)

“Fox News Sunday:” Sen. Ted Cruz; Rep. Devin Nunes (R-Calif.)

NBC’s “Meet the Press:” Michael Leiter, former director, U.S. National Counterterrorism Center