With his dominating win in Indiana this week, followed by the withdrawal of both Senator Ted Cruz and Governor John Kasich from the race, Donald Trump is now essentially the Republican Party’s nominee for the presidency. Once he is officially anointed as the GOP’s choice this July in Cleveland, Mr. Trump—whom hardly any pundits, this one included, expected to get the nomination when he joined the race—will enter a new, decisive phase of his campaign.

Part of being the presidential nominee of one of our two major political parties is getting classified intelligence briefings. Since the days of Harry Truman, the Democratic and Republican nominees have received top secret updates from our Intelligence Community, to prepare them for the weighty job they have made the shortlist for, should they move into the White House in a few months.

Thus it’s only a matter of time before Mr. Trump starts getting classified briefings from Intelligence Community experts, something the putative GOP nominee has expressed interest in receiving. These presentations, while classified, are not especially detailed. Seldom are sensitive matters like intelligence sources and methods presented to nominees. In essence, the briefings are a more detailed take on the day’s foreign headlines than presented in the media, with a side of secret juiciness. It’s a teaser for what nominees will get if things go well for them in early November.