Heather Nauert had better enjoy a good crisis, because she is going to face a rough geopolitical ride to the United Nations. The State Department spokeswoman, President Donald Trump’s nominee to replace Nikki Haley as U.S. ambassador at the United Nations, already knows how nasty diplomacy can be. She has accompanied Secretary of State Mike Pompeo to North Korea for combative talks about nuclear disarmament and Saudi Arabia to discuss the murder of Jamal Khashoggi.

But if the Senate confirms her appointment, Nauert will become one of America’s principal players on a brace of flash points from Iran to South Sudan, at least on paper. Haley, a former governor, impressed other ambassadors by bargaining with China to secure severe sanctions against North Korea after its 2017 nuclear test, while securing U.N. budget cuts to satisfy Trump.

But Nauert? Before her crash course in diplomacy from the State Department podium, she was a Fox News personality. Some commentators wonder whether she has the negotiating experience—or political backing in Washington—to play an equally effective diplomatic role.