Detailed Instructions: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Problem:CIA Director Mike Pompeo said the U.S. will continue to take steps to disrupt the North Korean economy and pressure the regime. | Carolyn Kaster/AP Pompeo: U.S. making 'no concessions' to North Korea 
  
 CIA Director Mike Pompeo says the U.S. won't be making any "concessions" to North Korea ahead of any talks with President Donald Trump. 
  
 North Korean leader Kim Jong Un must "continue to allow us to perform our military-necessary exercises on the peninsula, and then he’s got to make sure that he leaves on the table that discussion for denuclearization,” Pompeo said on “Fox News Sunday.” 
  
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 “These are real achievements,” he added. “These are conditions that the North Korean regime has never submitted to in exchange for conversations.” 
  
 Any discussions between Trump and Kim will “play out over time,” Pompeo said, but the first negotiations would likely set the tone for what arrangements will be deemed acceptable. 
  
 “Make no mistake about it,” he said. “While these negotiations are going on, there will be no concessions made.” 
  
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 In the meantime, Pompeo said, the U.S. will continue to take steps to disrupt the North Korean economy and pressure the regime. 
  
 “Those [efforts] will continue," he added, "and we will see how the talks and negotiation proceed." ||||| Warren: 'I'm not running for president' 
  
 Sen. Elizabeth Warren insisted Saturday that she is not running for the White House in 2020, but the Massachusetts Democrat repeatedly dodged on whether she would serve her full six-year term if she wins reelection to the Senate this November. 
  
 “I am in this fight to retain my Senate seat in 2018. That's where I'm focused," Warren told NBC's "Meet the Press" host Chuck Todd, in an interview scheduled to air in full on Sunday. "That's where I'm going to stay focused. I'm not running for president." 
  
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 Asked repeatedly whether she would serve a full six-year term if reelected, Warren said she is not running for president and would fight "for the people of Massachusetts, and for the people across this country." 
  
 Warren, who was courted by progressive activists to run for president in 2016 and is widely expected to win reelection in 2018, has consistently tried to tamp down speculation on any White House aspirations. 
  
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 During the 2016 cycle, Republican Sens. Rand Paul, Marco Rubio, Ted Cruz and Lindsey Graham all campaigned in their party's presidential primary season — along with Sen. Bernie Sanders (I-Vt.), who ran for the Democratic nomination. 
  
 Warren recently has ignited a fight in the Senate's Democratic Caucus over changes to the 2010 Dodd-Frank financial regulations, passed in the wake of the global financial crisis, and has repeatedly criticized President Donald Trump. ||||| Sen. Jeff Flake Jeffrey (Jeff) Lane FlakeThe Hill's Morning Report — Sponsored by Better Medicare Alliance — Expensive and brutal: Inside the Supreme Court fight ahead Collins, Murkowski to play pivotal role in Supreme Court abortion battle Senate passes mammoth farm bill MORE (R-Ariz.) called for a Republican to challenge President Trump Donald John TrumpMike Huckabee: If Trump nominated Moses to the Supreme Court Dems would still be unhappy Trump admin likely to detain migrant families for months during immigration proceedings: report ICE chief to protesters: We're not the ones separating families MORE in the 2020 election on Sunday during an interview with NBC's Chuck Todd on "Meet the Press." 
  
 "Do you think he needs to be challenged from somebody who espouses your views?" Todd asked Flake. 
  
 "Yes, I do. I do. I mean, it would be a tough go in a Republican primary. The Republican Party is the Trump party right now. But that's not to say it will stay that way," Flake said. 
  
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 The retiring Arizona has long been one of Trump's chief critics in the Republican Party, often lashing out at the president for his immigration and economic policies, as well as for his bombastic rhetoric. He criticized the Trump administration when announcing he would not run again for Senate 
  
 Flake made similar comments earlier this month, and would not rule out a 2020 challenge to Trump. 
  
 “I do think the president will have a challenge from the Republican Party, I think there should be,” Flake said. “I also think that there will be an independent challenge, particularly if the Democrats insist on putting somebody up from the far left of the party.” 
  
 Flake has stoked speculation about a potential 2020 bid with an upcoming visit to New Hampshire. 
  
 Meanwhile, Trump last night jumped into full campaign mode at a rally in Pennsylvania for GOP congressional candidate Rick Saccone. 
  
 Trump spent most of the event touting his accomplishments as president, and revealing his new campaign slogan "Keep America Great." 
  
 "The tax bill was so massive, bigger than [Ronald] Reagan, biggest one done," Trump said. It is so big, he added, that "we are calling it tax reform" instead of a tax cut. 
  
 "This is where a nonpolitician is good. For 40 years they couldn't pass anything," the president continued. 
  
 Trump is poised to face off against one of several Democratic hopefuls in 2020, which may include Sens. Elizabeth Warren Elizabeth Ann WarrenSenate Dems ask FEMA to extend Puerto Rico shelters Senate confirms Trump's pick to lead US forces in Afghanistan Anti-establishment fervor grips Dems MORE (D-Mass.), Kamala Harris Kamala Devi HarrisBlack senators introduce anti-lynching bill Anti-establishment fervor grips Dems Gillibrand calls to eliminate ICE: 'Get rid of it, start over' MORE (D-Calif.) or Bernie Sanders Bernard (Bernie) SandersOcasio-Cortez: Democrats feared they'd lose their jobs if they backed me Democrats can kiss swing voters goodbye with progressive ballot Black senators introduce anti-lynching bill MORE (I-Vt.). ||||| Allowing one person to have nearly total control over tariffs is “not the way to do business,” Sen. Jeff Flake (R-Ariz.) said. | Jacquelyn Martin/AP Photo Flake pushes bill to block Trump tariffs 
  
 Sen. Jeff Flake is pushing legislation to block President Donald Trump’s new tariffs on steel and aluminum, declaring he won’t back any exemptions put forward by the administration. 
  
 “The problem is, when you say, ‘All right, let’s have tariffs. But let’s couple that with uncertainty,’ that’s almost worst. I mean, those are dual poisons to the economy,” the Arizona Republican said Sunday on NBC’s “Meet the Press.” “You know, tariffs are awful. Tariffs married to uncertainty is probably even worse.” 
  
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 Allowing one person to have nearly total control over tariffs is “not the way to do business,” Flake said. 
  
 While it would be difficult for Congress to reach a majority on a bill to block the tariffs, it has to try, he said, citing congressional success in the 1970s overriding President Jimmy Carter’s tariffs on oil. 
  
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 With Trump's trade moves, Flake said it's becoming harder to make the case that the Republican Party is the party of free trade. 
  
 “Free trade is rarely popular out on the stump,” he said. “But usually, after the campaign, the Congress gets together and says, ‘All right. Let’s pass trade promotion authority’ or ‘Let’s pass this trade agreement.’ I think we’re going completely in the wrong direction.” ||||| Massachusetts Sen. Elizabeth Warren Elizabeth Ann WarrenOvernight Finance: Wells Fargo could pay B fine | Dems seek info on loans to Kushner | House to vote on IRS reform bills | Fed vice chair heading before Congress Dems demand information on Kushner Wall Street loans Warren rakes in millions for campaign, driven by small donors MORE (D) on Saturday said she is not running for president, but refused to pledge to serve out a full six-year term in the Senate if reelected in 2018. 
  
 In the interview airing Sunday on "Meet the Press", Warren repeated herself several times when pressed by host Chuck Todd on whether she planned to serve another six years in the Senate. 
  
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 "So look, I am not running for president of the United States. I am running for the United States Senate," Warren said. 
  
 "But let me actually make a — underline a point on this one, and that is we can't just be a party that says, 'Oh, we're paying attention about what happens every four years.' And I know there's a lot of anxiety, particularly on the Democratic side, about how we are going to deal with Donald Trump in 2020," she added. 
  
 "I take it as a no you're not pledging to serve your full six-year term if you win reelection?" Todd asked in response. 
  
 "I already told you. I have no intention of running for the United States, for president," she responded. "This government is working better and better and better for a thinner and thinner slice at the top. I am in these fights, and I am in this fight to retain my Senate seat in 2018. That's where I'm focused. That's where I'm going to stay focused. I'm not running for president." 
  
 "So no pledge, though, on the six years?" Todd asked, one last time. 
  
 "I am not running for president," Warren responded firmly. 
  
 The liberal senator annoyed some of her more centrist colleagues in the Senate this week with a tweet attacking several Democrats who joined with Republicans on a bill deregulating some of the country's largest banks. 
  
 “It’s just unbelievable that Elizabeth Warren would not only attack her colleagues but also use this opportunity to raise money for her campaign,” one Democratic aide said this week. 
  
 She has been a vocal opponent of President Trump Donald John TrumpInfowars' Alex Jones blasts Trump over airstrikes: 'He's crapping all over us' McCain to Trump: Airstrikes alone won't achieve objectives in Syria Top general: US did not notify Russia on Syria targets MORE, and stirred rumors of a potential 2020 bid. |||||
Solution:
Sen. Elizabeth Warren says she's not running for president in 2020, but another six-year term as senator? That she wouldn't confirm, Politico reports. "I am in this fight to retain my Senate seat in 2018," she said on Meet the Press when Chuck Todd asked whether she'd complete another six years. "That's where I'm focused. ... I'm not running for president." Todd asked one last time: "So no pledge, though, on six years?" And she said, per the Hill, "I am not running for president." Around the talk show dial: Sen. Jeff Flake wants to see a GOP primary challenger in 2020 who espouses his views, the Hill reports. "I mean, it would be a tough go in a Republican primary," he says on Meet the Press. "The Republican Party is the Trump party right now. But that's not to say it will stay that way." Flake is also pressing for legislation to stop President Trump's tariffs, per Politico. "You know, tariffs are awful," he says. "Tariffs married to uncertainty is probably even worse." CIA Director Mike Pompeo says North Korea will get no concessions before talks with President Trump, Politico reports. "Make no mistake about it," he says on Fox News Sunday. "While these negotiations are going on, there will be no concessions made." Pompeo adds there's nothing to fear from new Russian nukes. "We are following and tracking all of this closely, as are our brothers at the Department of Defense," Politico quotes him as saying.