Both the Nuremberg and Tokyo trials convicted senior leaders for atrocities committed while in government, treating their deeds not as acts of state but as personal crimes punishable by law. After the Cold War, these principles of legal punishment for the world’s worst criminals were revived with United Nations tribunals for the former Yugoslavia and Rwanda, as well as special courts for East Timor, Sierra Leone and elsewhere.
Mr. Smith hewed to the ideal of individual criminal responsibility as the prosecutor for the Kosovo Specialist Chambers, which was created under U.S. and European pressure to investigate war crimes and crimes against humanity from 1998 to 2000 related to Kosovo’s struggle for independence from Serbia. Although part of Kosovo’s legal system, the institution is headquartered in The Hague and staffed by international judges and personnel — which is how Mr. Smith, a U.S. citizen, wound up serving as its specialist prosecutor.
In June 2020, his office revealed that it was seeking to indict Hashim Thaci, then Kosovo’s popular president, who was on his way to the White House for a summit with Serbia convened by the Trump administration. Mr. Thaci, a former Kosovo Liberation Army guerrilla leader, returned home, later resigning as president and being detained in The Hague in order to face several counts of war crimes and crimes against humanity in an ongoing trial that could last for years.
It is always difficult and risky to prosecute national leaders with some popularity among their people. Savvy dictators will often secure a promise of amnesty as the price for a transition of power, which is why a furtive impunity — such as that promulgated in Chile by Gen. Augusto Pinochet’s military government in 1978 — is more common than spectacular trials such as Nuremberg or Tokyo. In order to impose justice on Nazi Germany and Imperial Japan, the Allies had to commit to a devastating policy of unconditional surrender, which meant that German and Japanese war criminals could not negotiate for their own necks. Even so, the Truman administration quietly undercut that pledge of unconditional surrender for Emperor Hirohito, fearing that the Japanese might fight on if he was prosecuted as a war criminal. The Truman administration left the emperor securely in the Imperial Palace while his prime ministers and generals were tried and convicted by an Allied international military tribunal in Tokyo.
At an earlier point in his career, from 2008 to 2010, Mr. Smith worked as the investigation coordinator in the prosecutor’s office at the International Criminal Court, the permanent international war crimes tribunal based in The Hague. Although 123 countries from Afghanistan to Zambia have joined the I.C.C., the tribunal was a bugbear for the Trump administration; Mr. Trump’s national security adviser, John Bolton, vowed to let it “die on its own,” while his secretary of state, Mike Pompeo, reviled it as a “renegade, unlawful, so-called court.”