America’s top diplomat and the leader of its military penned a joint Op-Ed for the Wall Street Journal last week, titled “We’re Holding Pyongyang to Account,” in which they laid the groundwork for America’s new strategy regarding North Korea under President Trump’s administration.

Secretary of State Rex Tillerson and Secretary of Defense James Mattis joined forces last week to explain the U.S.’s stance on Kim Jong-un’s North Korean regime, assuaging some concerns about the potential for war with North Korea, while still emphasizing a new, more assertive stance toward the reclusive state.

Although tensions have been increasing between the U.S. and North Korea for months, the combination of new long-range missile tests and U.S. intelligence confirming Kim does indeed have the technological capability to create small enough nuclear warheads to mount on said missiles, saw a dramatic shift in U.S. rhetoric toward Kim’s regime.  President Trump took to the media, and to Twitter, to threaten Kim with “fire and fury,” if he were to initiate war with the United States, and in interviews conducted at the Pentagon, Secretary Mattis doubled down on the president’s threat, saying a missile strike on Guam would bring about war.

In the piece, Mattis and Tillerson lay out the clear criteria for victory in their diplomatic efforts:

The Trump administration, with the support of the international community, is applying diplomatic and economic pressure on North Korea to achieve the complete, verifiable and irreversible denuclearization of the Korean Peninsula and a dismantling of the regime’s ballistic-missile programs.”

The piece goes on to explain that the previous strategy of “strategic patience” now has a formally titled replacement; “We are replacing the failed policy of “strategic patience,” which expedited the North Korean threat, with a new policy of strategic accountability.”

North Korea has made it clear that any attempt at removing the North Korean Kim dynasty from power would immediately result in retaliatory nuclear strikes, though defense officials have long attested that the United States is seeking a denuclearized North Korea, not a Kim-less one.  In their piece, Tillerson and Mattis again emphasized this point, while delineating the North Korean populous from their aggressive government.

The object of our peaceful pressure campaign is the denuclearization of the Korean Peninsula. The U.S. has no interest in regime change or accelerated reunification of Korea. We do not seek an excuse to garrison U.S. troops north of the Demilitarized Zone. We have no desire to inflict harm on the long-suffering North Korean people, who are distinct from the hostile regime in Pyongyang.”