In a televised new year’s address, North Korean leader Kim Jong-un said he would like to meet with President Trump for a second summit on a possible denuclearization deal, while threatening to resume nuclear efforts if the U.S. did not offer any concessions on sanctions.

Kim Jong-un: “I am always ready to sit down again with the U.S. president at any time and will make efforts to produce an outcome that the international community would welcome. However, if the U.S. miscalculates our people’s patience, forces something upon us and pursues sanctions and pressure, without keeping a promise it made in front of the world, we have no option but to explore a new path in order to protect our sovereignty and achieve peace on the Korean Peninsula.”

In a historic summit in June, Trump and Kim pledged to work toward complete denuclearization of the Korean Peninsula but have since been at an impasse over the issue of lifting sanctions on North Korea.