President Trump is facing dual nuclear threats from Iran and North Korea, and is reacting strongly to one but saying little about the other. On Monday, the president said Iran was “playing with fire” after it surpassed a uranium stockpile limit set by the 2015 nuclear deal, defying the agreement for the first time in response to Mr. Trump pulling the U.S. out of it last year. But North Korea continues to produce material for nuclear weapons despite U.S. efforts, including an historic weekend meeting between the president and Kim Jong Un. The Trump administration is reportedly split on what demands to make of the North Korean leader as it prepares to return to the negotiating table — possibly considering some concessions including providing humanitarian aid to the isolated totalitarian state, reports CBS News’ Chip Reid. As for Iran, the White House is vowing to keep up its campaign of “maximum pressure” through sanctions until Tehran reverses course. In a new interview with Fox News’ Tucker Carlson, Mr. Trump continued to push for talks with Iran, even though Tehran has said it won’t open a direct dialogue until the harsh sanctions imposed by the White House are lifted. “You can’t let Iran have…