North Korean leader Kim Jong-un blamed the current standstill on the U.S., and said that that peace and security on the Korean Peninsula will entirely depend on the U.S. attitude. <br />The North's Korean Central News Agency reported Friday on Kim's meeting with Russian President Vladimir Putin the day before.<br />The report said the leaders assessed the current situation on the Korean Peninsula, and that Kim said it's reached a critical point where it may return to its original state as the "U.S. took a unilateral attitude in bad faith at the Hanoi summit."<br />He also said the North will prepare itself for any situation.<br />The North Korean and Russian leaders reportedly discussed ways to promote strategic communication and tactical collaboration to ensure peace and security on the Korean peninsula and in the region.<br />The report says Kim invited Putin to visit the North at a convenient time, and that Putin readily accepted the invitation. <br />