I hope for success and peace, but this "history made" statement sounds an awful lot like past "history made" statements.
1992: North Korea signs an agreement that they will not build nuclear weapons or enrich uranium, including IAEA inspection oversight
1993: NK refuses IAEA inspections of two sites after the IAEA had strong evidence that NK was cheating on its commitments. NK withdraws from the Non-Proliferation Treaty, then un-withdraws.
1994: NK signs an agreement allowing IAEA inspectors access to nuclear sites, then denies access to a plutonium reprocessing plant. Later in the year, a deal is signed where NK will eliminate all of its nuclear weapons in exchange for security guarantees and normalization of political and economic ties.
2000: NK and SK sign a deal "agree[ing] to resolve" the question of reunification of the Korean Peninsula, and opening economic and cultural exchanges. The US drops some of its sanctions.
2002: NK acknowledges that it has a secret uranium enrichment program. NK tells the IAEA it is restarting its nuclear facilities for power generation only. In December, NK cuts all IAEA seals and disables monitoring equipment at its nuclear sites.
2003: NK withdraws from the Non-Proliferation Treaty and tells the US it has already built a nuclear weapon and is reprocessing spent fuel for more nuclear material. NK says they might get rid of their nuclear program but would expect "something substantial" in return.
2005: Uranium hexafluoride believed to be from NK is found in Libya. NK commits to "verifiable denuclearization of the Korean Peninsula" and to re-join the Non-Proliferation Treaty.
2006: NK conducts an underground nuclear weapons test.
2007: NK agrees to an action plan to implement the 2005 agreement, where NK will shut down its nuclear facilities in exchange for lifting economic sanctions. The IAEA confirms shutdown of NK's nuclear reactors.
2008: NK agrees to account for its plutonium-based weapons program and its proliferation activities. NK removes IAEA seals from its nuclear facilities and says it will start up the facilities. A new agreement is signed allowing IAEA inspection of NK's nuclear sites. The US removes NK from its list of state sponsors of terrorism.
2009: NK ejects US and IAEA inspectors from its nuclear sites. NK conducts another underground bomb test.
2010: NK tells Chinese officials that it is still committed to denuclearization of the Korean Peninsula. NK announces a new uranium enrichment facility, purportedly for peaceful power generation only.
2012: The US an NK sign an agreement to halt NK's missile and nuclear programs, including IAEA inspection, in exchange for food aid.
2013: NK announces that it will conduct another nuclear test and continue missile launches. NK conducts another underground nuclear test and restarts is nuclear reactor.
2016: NK tests a hydrogen bomb.
https://www.armscontrol.org/factsheets/dprkchron
Forgive me for being skeptical until we see results that last for more than a few months.
Also, what was agreed to was extremely fuzzy, sort of like "agreeing to begin planning the planning process" rather than concrete steps with timelines.
