President Trump announced Thursday that he would start the process of withdrawing the U.S. from the Paris climate change agreement, a day after using one of his favorite ways of signaling that a decision was coming soon.

When asked on Wednesday what his plans were for the climate agreement, Trump told reporters, "You're going to find out very soon."

It was a variation of a comment he's made several times in recent months just before he makes a major decision, which he has sometimes whittled down to "You'll find out."

On New Year's Day, for example, Trump previewed a statement he was preparing about Russia's attempts to influence the U.S. election. He said he knows "things that other people don't know" about Russian hacking, and promised to reveal some of that information soon.

When pressed for details, Trump simply said, "You'll find out on Tuesday or Wednesday."

By the end of that week, Trump had been briefed by U.S. intelligence officials and released a statement saying that while Russia and others are constantly launching cyberattacks against the U.S., he believed there was "absolutely no effect" on the outcome of the election due to Russian interference.

On April 5, after the world recoiled in anger over Syria's apparent chemical attack on its own people, Trump was asked how he would react. "You'll see," Trump said.

Two days later, Trump authorized a missile strike against a Syrian government airbase.

Trump's "you'll find out" tell doesn't always lead to prompt answers. During the campaign, for example, he said he wanted to do something worse than waterboarding to terrorists. When asked what that would be, Trump said, "You'll find out."

Nearly a year later, Trump seemed to accept his staff's advice that the U.S. should not use waterboarding.

And in January of this year, Trump said he wanted to investigate evidence that he said showed as many as several million illegal immigrants voted in the election. When asked exactly how many illegal votes there were, he said, "Well, we're gonna find out," but the administration has yet to release any analysis on the topic.

But Trump's "you'll find out" warning is often followed by action, which seemed to add importance to his late April warning about North Korea. When pressed on whether the U.S. might be considering military action against North Korea, Trump said, "You'll soon find out."

So far, however, Trump's actions have fallen short of military action and instead have been comprised of working with other countries to tighten sanctions against the regime. On Thursday, the Trump administration sanctioned a Russian company for contributing to North Korea's nuclear program.