North Korea has been nothing but open about its ultimate military goal: The country and its defiant leader, Kim Jong Un, want a nuclear weapon to place on top of an intercontinental ballistic missile capable of reaching the United States.

The regime has recently shown significant advancements in its internationally condemned nuclear program and exchanged escalating threats with U.S. President Donald Trump’s administration.

Former President Barack Obama warned his successor about Kim, and North Korea has quickly become one of the Trump administration’s most pressing international concerns.

Here are some fast facts about Pyongyang’s nuclear aspirations and how close they could be to reality: