President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's advisers will join the Sunday show circuit this week to discuss the president's upcoming trip to Helsinki, Finland, where he is set to participate in a bilateral summit with Russian President Vladimir Putin.

U.S. Ambassador to Russia Jon Huntsman will join "Fox News Sunday" and NBC's "Meet the Press" where he will discuss plans for the summit scheduled for Monday, including possible topics of discussion between the two leaders.

Also joining ABC's "This Week" from the White House to discuss the Helsinki summit will be national security adviser John Bolton, who traveled to Moscow last month to set up the Trump-Putin summit.

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CNN anchor Jake Tapper said Saturday that Bolton was also scheduled to appear on "State of the Union" on Sunday but the White House cancelled the interview after fellow CNN journalist Jim Acosta had a tense exchange with Trump during a press conference this week.

One possible topic of discussion between Trump and Putin at the summit is the indictment this week of 12 Russian intelligence officials who were accused by the special counsel's office of being behind the 2016 hack of the Democratic National Committee.

Several top Senate Democrats sent a letter to Trump on Saturday urging him not to meet with Putin one-on-one this this week after news of the indictment broke Friday, calling the Russian leader "a trained KGB intelligence veteran who will come to this meeting well-prepared."

Among those Democrats was Senate Intelligence Committee Ranking Member Sen. Mark Warner Mark Robert WarnerDemocrats call for declassifying election threats after briefing by Trump officials It's time to upgrade benefits Intelligence chief says Congress will get some in-person election security briefings MORE (Va.), who will join NBC as well as CNN's "State of the Union" to discuss the indictments and the summit. A Republican on the committee, Sen. John Cornyn John CornynThe Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Liberal super PAC launches ads targeting vulnerable GOP senators over SCOTUS fight Senate GOP faces pivotal moment on pick for Supreme Court MORE (Texas), will appear on CBS' "Face the Nation.

Democratic Sen. Chris Coons Christopher (Chris) Andrew CoonsMurkowski: Supreme Court nominee should not be taken up before election Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (Del.), who also sits on the Intelligence Committee but was not one of the letter's signatories, will appear on Fox News.

Meanwhile, two members of the House Intelligence Committee – Reps. Trey Gowdy Harold (Trey) Watson GowdySunday shows preview: Election integrity dominates as Nov. 3 nears Tim Scott invokes Breonna Taylor, George Floyd in Trump convention speech Sunday shows preview: Republicans gear up for national convention, USPS debate continues in Washington MORE (R-S.C.) and Adam Schiff Adam Bennett SchiffPelosi, Democrats unveil bills to rein in alleged White House abuses of power Chris Matthews ripped for complimenting Trump's 'true presidential behavior' on Ginsburg Trump casts doubt on Ginsburg statement, wonders if it was written by Schiff, Pelosi or Schumer MORE (D-Calif.) – will also join the Sunday circuit to discuss the indictments, appearing on CBS and CNN, respectively.

Joining Gowdy on CBS will be Rep. Joe Crowley Joseph (Joe) CrowleyHillicon Valley: Election officials prepare for new Russian interference battle | 'Markeyverse' of online fans helps take down a Kennedy | GOP senators unveil bill to update tech liability protections 'Markeyverse' of online fans helps take down a Kennedy The Hill's Campaign Report: Trump visits Kenosha | Primary day in Massachusetts | GOP eyes Minnesota as a battleground MORE (N.Y.), the No. 4 House Democrat who was defeated in a primary last month by Alexandria Ocasio-Cortez (D), who this week accused the Democratic lawmaker of refusing to concede and preparing a third-party bid for office.

Here's the full Sunday show lineup:

ABC's "This Week": National security adviser John Bolton; Sen. Chris Murphy Christopher (Chris) Scott MurphyDemocratic senator calls for 'more flexible' medical supply chain to counter pandemics The Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon GOP chairman to release interim report on Biden probe 'in about a week' MORE (D-Conn.).

NBC's "Meet the Press": Ambassador Jon Huntsman, Sens. Mark Warner (D-Va.) and Dan Sullivan Daniel Scott SullivanWill Republicans' rank hypocrisy hinder their rush to replace Ginsburg? Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll Republican Senators raise concerns over Oracle-TikTok deal MORE (R-Alaska).

CBS's "Face the Nation": Reps. Trey Gowdy (R-S.C.) and Joe Crowley (D-N.Y.), Sen. John Cornyn (R-Texas).

CNN's "State of the Union": Warner, Sen. Rand Paul Randal (Rand) Howard PaulRand Paul says he can't judge 'guilt or innocence' in Breonna Taylor case Overnight Health Care: Health officials tell public to trust in science | Despair at CDC under Trump influence | A new vaccine phase 3 trial starts Health officials tell public to trust in science MORE (R-Ky.), Rep. Adam Schiff (D-Calif.).

"Fox News Sunday": Huntsman, Sen. Chris Coons (D-Del.).