The surprise conclusion of this week’s second DPRK-U.S. summit with no deal was caused by disagreement between the two countries over sanctions relief, President Donald Trump said in a press conference on Thursday.

Speaking to international press following talks with Kim Jong Un which abruptly came to an end, President Trump said the North Koreans had “wanted the sanctions lifted in their entirety, and we couldn’t do that.”

DPRK negotiators had been willing to take some steps to denuclearize, the President said, but in “areas that are less important than what we want.”

The breakdown of the summit, he stressed,