Secretary of State John KerryJohn KerryAs Congress adjusts to Trump, Iran put under the pressure it deserves Sharpton pressures Dems on Trump nominees Words are not enough — US must support Christians who survived genocide in Iraq MORE will appear on all five Sunday shows as worries about the Russian-Ukraine standoff and Israel's ground offensive in Gaza dominate headlines.

The two issues represent different challenges for Kerry, who is also likely to be asked about the decision to extend talks on curbing Iran's nuclear program. That decision would have dominated the news most weeks, but was released late in the day Friday and was overshadowed by the events in Gaza and Ukraine.

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The Obama administration is pressing Russia and separatists in Ukraine to allow international investigators free access to the crash site of Malaysia Airlines Flight 17, which is believed to have been shot down by a surface-to-air missile.

The administration has all but blamed Russian separatists for the violence, though militia groups have denied it.

Kerry will apper on ABC's “This Week” with Rep. Mike Rogers  (R-Mich.), the chairman of the House Intelligence Committee; Maen Rashid Areikat, the Palestinian envoy in Washington; and Ron Dermer, Israel's ambassador to the U.S.

The line-up on "Face the Nation" on CBS includes Kerry, Rep. Peter King (R-N.Y.), and Martin Indyk, the former U.S. special Mideast envoy, specializing in the Israeli-Palestinian negotiations. He is now a vice president and director of the Foreign Policy Program at the Brookings Intuition.

CNN's "State of the Union" will host Kerry, Sen. Dianne FeinsteinDianne FeinsteinOvernight Energy: Senate Dems set to fight water bill White House could make 'torture' report public, says Intel Dem Top Intel Dem: Congress 'far from consensus' on encryption MORE (D-Calif.), Rep. Michael McCaul (R-Texas); the U.S. commander of NATO forces in Europe, Air Force Gen. Philip Breedlove, and Robert Turner of the main U.N. aid agency in Gaza.

Meanwhile, NBC's “Meet the Press” features Kerry and Sen. Lindsey GrahamLindsey GrahamEx-Im Bank fails to get quorum reprieve in stopgap spending bill Overnight Defense: Funding bill would ease Trump Defense pick's confirmation | Obama delivers final security speech Congress wants hearing on Pentagon wasteful spending charges MORE (R-S.C.). 

The lineup on “Fox News Sunday” includes Kerry and Sens. Ted CruzTed CruzPentagon's suppressed waste report only tip of the inefficient machine Markos Moulitsas: Kill the filibuster Ark., Texas senators put cheese dip vs. queso to the test MORE (R-Texas), Robert MenendezRobert MenendezThe right person for State Department is Rudy Giuliani Warren, Menendez question shakeup at Wells Fargo Democrats press Wells Fargo CEO for more answers on scandal MORE (D-N.J.) and Bob CorkerBob CorkerPetraeus appointment could rankle wary FBI Haley to meet with senators during Washington trip Senate: Act now to save Ukraine MORE (R-Tenn.).

The Fox lineup suggests immigration will be a part of the discussion.

Cruz introduced a bill on Thursday that would end an “amnesty” program that allows some undocumented immigrants to remain in the country without having to worry about being deported. 

“The only way to stop the border crisis is to stop President Obama’s amnesty," Cruz said in a statement. “If we do not put an end to its expansion — to the promise of amnesty that is the reason so many are coming — then more little boys and girls will be trafficked, abused, and even killed.”